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| UNITED      STATESSECURITIES      AND EXCHANGE COMMISSIONWashington,      D.C. 20549FORM      10-K/AAmendment      No. 1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [X]           annual report pursuant      to section 13 or 15(d) of the securities      exchange act of 1934For      the fiscal year ended: December 31, 2009                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| [   ]           transition report      pursuant to section 13 or 15(d) of the securities      exchange act of 1934For      the transition period from      _______________________________________________________                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Commission      file number 1-31993                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| STERLING      CONSTRUCTION COMPANY, INC.(Exact      name of registrant as specified in its charter)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| DelawareState      or other jurisdiction ofincorporation      or organization                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   | 25-1655321(I.R.S.      EmployerIdentification      No.) |
| 20810      Fernbush LaneHouston,      Texas(Address      of principal executive offices)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  77073(Zip      Code) |
| Registrant's      telephone number, including area code (281)      821-9091                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Securities      registered pursuant to Section 12(b) of the Act:Title      of each classCommon      Stock, $0.01 par value per share(Title      of Class)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  | Name      of each exchange on which registeredThe      NASDAQ Stock Market LLC |
| Securities      registered pursuant to section 12(g) of the Act:None                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Indicate      by check mark if the registrant is a well-known seasoned issuer, as      defined in Rule 405 of the Securities Act. [  ]      Yes   [√] No                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Indicate      by check mark if the registrant is not required to file reports pursuant      to Section 13 or Section 15(d) of the Act. [  ]      Yes   [√] No                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Indicate      by check mark whether the registrant (1) has filed all reports required to      be filed by Section 13 or 15(d) of the Securities ExchangeAct      of 1934 during the preceding 12 months (or for such shorter period that      the registrant was required to file such reports), and (2) has been      subject to such filing requirements for the past 90 days. [√]      Yes  [   ] No                                                                                                                                                                                                                                                                                                                                                                                     |
| Indicate      by check mark whether the registrant has submitted electronically and      posted on its corporate website, if any, every interactive data file      required to be submitted and posted pursuant to rule 405 of Regulation S-T      during the preceding 12 months (or for such shorter prior that the      registrant was required to submit and post such files). [  ]      Yes  [   ] NoIndicate      by check mark if disclosure of delinquent filers pursuant to Item 405 of      Regulation S-K is not contained herein, and will not be contained, to the      best of registrant’s knowledge, in definitive proxy or information      statements incorporated by reference in Part III of thisForm      10-K or any amendment to this Form 10-K. [  ] |
| Indicate      by check mark whether the registrant is a large accelerated filer, an      accelerated filer, a non-accelerated filer, or a smaller reporting      company.  See definitions of "large accelerated filer,"      "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the      Exchange Act.Large      accelerated filer [  ] Accelerated filer [√]Non-accelerated      filer   [  ] (Do not check if a smaller      reporting company)Smaller reporting company [ ]                                                                                                                                                                                                                                                                  |
| Indicate      by check mark if the registrant is a shell company (as defined in Rule      12b-2 of the Act). [  ] Yes  [√] No                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| Aggregate      market value of the voting and non-voting common equity held by      non-affiliates at June 30, 2009: $228,573,765.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| At      March 2, 2010, the registrant had 16,083,038 shares of common stock      outstanding.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

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| Hallwood Holdings      Incorporated  | May 1991 to July      1993        |
|-------------------------------------------|----------------------------------------|
| Oakhurst Capital,      Inc.          | July 1993 to April      1995      |
| Oakhurst Company,      Inc.          | April 1995 to      November 2001  |

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| Number  | Exhibit      Title                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 2.1     | Purchase      Agreement by and among Richard H. Buenting, Fisher Sand & Gravel Co.,      Thomas Fisher and Sterling Construction Company, Inc. dated as of      October 31, 2007 (incorporated by reference to Exhibit number 2.1 to      Sterling Construction Company, Inc.'s Current Report on Form 8-K,      Amendment No. 1 filed on November 21, 2007 (SEC File No.      1-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| 2.2     | Purchase      Agreement, dated as of December 3, 2009, by and among Kip Wadsworth, Ty      Wadsworth, Con Wadsworth, Tod Wadsworth and Sterling Construction Company,      Inc. (incorporated by reference to Exhibit 2.1 to Sterling Construction      Company, Inc.'s Current Report on Form 8 K, filed on December 3, 2009 (SEC      File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| 3.1     | Certificate      of Incorporation of Sterling Construction Company, Inc. (incorporated by      reference to Exhibit 3.0 to Sterling Construction Company, Inc.'s      Quarterly Report on Form 10-Q, filed on August 10, 2009 (SEC File No.      1-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| 3.2     | Bylaws      of Sterling Construction Company, Inc. as amended through March 13, 2008      (incorporated by reference to Exhibit 3.1 to Sterling Construction      Company, Inc.'s Current Report on Form 8-K, filed on March 19, 2008 (SEC      File No. 333-129780)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| 4.1     | Form      of Common Stock Certificate of Sterling Construction Company, Inc.      (incorporated by reference to Exhibit 4.5 to its Form 8-A, filed on      January 11, 2006 (SEC File No. 01-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| 10.1#   | Oakhurst      Company, Inc. 2001 Stock Incentive Plan (incorporated by reference to      Exhibit 10.6 to Sterling Construction Company, Inc.'s Registration      Statement on Form S-1, filed on November 17, 2005 (SEC File No.      333-129780)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| 10.2#   | Forms      of Stock Option Agreement under the Oakhurst Company, Inc. 2001 Stock      Incentive Plan (incorporated by reference to Exhibit 10.51 to Sterling      Construction Company, Inc.'s Annual Report on Form 10-K for the year ended      December 31, 2004, filed on March 29, 2005 (SEC File No.      001-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| 10.3#   | Summary      of the Compensation Plan for Non Employee Directors of Sterling      Construction Company, Inc. (incorporated by reference to Exhibit 10.1 to      Sterling Construction Company, Inc.'s Quarterly Report on Form 10-Q, filed      on August 11, 2008 (SEC File No. 333-129780)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 10.4    | Credit      Agreement by and among Sterling Construction Company, Inc., Texas Sterling      Construction Co., Oakhurst Management Corporation and Comerica Bank and      the other lenders from time to time party thereto, and Comerica Bank as      administrative agent for the lenders, dated as of October 31, 2007      (incorporated by reference to Exhibit 10.1 to Sterling Construction      Company, Inc.'s Current Report on Form 8-K Amendment No. 1, filed on      November 21, 2007 (SEC File No. 01-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| 10.5    | Security      Agreement by and among Sterling Construction Company, Inc., Texas Sterling      Construction Co., Oakhurst Management Corporation and Comerica Bank as      administrative agent for the lenders, dated as of October 31, 2007      (incorporated by reference to Exhibit 10.2 to Sterling Construction      Company, Inc.'s Current Report on Form 8-K Amendment No. 1, filed on      November 21, 2007 (SEC File No. 01-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| 10.6    | Joinder      Agreement by Road and Highway Builders, LLC and Road and Highway Builders      Inc, dated as of October 31, 2007 (incorporated by reference to Exhibit      10.3 to Sterling Construction Company, Inc.'s Current Report on Form 8-K,      Amendment No. 1 filed on November 21, 2007 (SEC File No.      1-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| 10.7#   | Employment      Agreement dated as of July 19, 2007 between Sterling Construction Company,      Inc. and Patrick T. Manning (incorporated by reference to Exhibit 10.1 to      Sterling Construction Company, Inc.'s Current Report on Form 8-K filed on      January 17, 2008 (SEC File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| 10.8#   | Employment      Agreement dated as of July 19, 2007 between Sterling Construction Company,      Inc. and Joseph P. Harper, Sr. (incorporated by reference to Exhibit 10.2      to Sterling Construction Company, Inc.'s Current Report on Form 8-K filed      on January 17, 2008 (SEC File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 10.09#  | Employment      Agreement dated as of July 16, 2007 between Sterling Construction Company,      Inc. and James H. Allen, Jr. (incorporated by reference to Exhibit 10.3 to      Sterling Construction Company, Inc.'s Current Report on Form 8-K filed on      January 17, 2008 (SEC File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| 10.10#  | Option      Agreement dated August 7, 2007 between Sterling Construction Company, Inc.      and James H. Allen, Jr. (incorporated by reference to Exhibit 10.4 to      Sterling Construction Company, Inc.'s Current Report on Form 8-K filed on      January 17, 2008 (SEC File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 10.11#  | Employment      Agreement dated as of March 17, 2006 between Sterling Construction      Company, Inc. and Roger M. Barzun (incorporated by reference to Exhibit      10.11 to Sterling Construction Company, Inc.'s Annual Report on Form 10-K      for the year ended December 31, 2008, filed on March 16, 2009 (SEC File      No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 10.12#* | Employment      Agreement dated as of December 3, 2009 between Ralph L. Wadsworth      Construction Company, LLC and Kip L. Wadsworth.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| 21      | Subsidiaries      of Sterling Construction Company, Inc.:Name                                                                                                                  State of IncorporationTexas      Sterling Construction      Co.                                                               DelawareRoad      and Highway Builders,      LLC                                                             NevadaRoad      and Highway Builders      Inc.                                                               NevadaRoad      and Highway Builders of California,      Inc.                                            CaliforniaRalph      L. Wadsworth Construction Company,      LLC                                Utah |
| 23.1+   | Consent      of Grant Thornton LLP                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| 31.1*   | Certification      of Patrick T. Manning, Chief Executive Officer of Sterling Construction      Company, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| 31.2*   | Certification      of James H. Allen, Jr., Chief Financial Officer of Sterling Construction      Company, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 32.0+   | Certification      pursuant to Section 1350 of Chapter 63 of Title 18 of the United States      Code (18 U.S.C. 1350) of Patrick T. Manning, Chief Executive Officer, and      James H. Allen, Jr., Chief FinancialOfficer.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |

----

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| Number  | Exhibit      Title                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|---------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| 2.1     | Purchase      Agreement by and among Richard H. Buenting, Fisher Sand & Gravel Co.,      Thomas Fisher and Sterling Construction Company, Inc. dated as of      October 31, 2007 (incorporated by reference to Exhibit number 2.1 to      Sterling Construction Company, Inc.'s Current Report on Form 8-K,      Amendment No. 1 filed on November 21, 2007 (SEC File No.      1-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| 2.2     | Purchase      Agreement, dated as of December 3, 2009, by and among Kip Wadsworth, Ty      Wadsworth, Con Wadsworth, Tod Wadsworth and Sterling Construction Company,      Inc. (incorporated by reference to Exhibit 2.1 to Sterling Construction      Company, Inc.'s Current Report on Form 8 K, filed on December 3, 2009 (SEC      File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| 3.1     | Certificate      of Incorporation of Sterling Construction Company, Inc. (incorporated by      reference to Exhibit 3.0 to Sterling Construction Company, Inc.'s      Quarterly Report on Form 10-Q, filed on August 10, 2009 (SEC File No.      1-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| 3.2     | Bylaws      of Sterling Construction Company, Inc. as amended through March 13, 2008      (incorporated by reference to Exhibit 3.1 to Sterling Construction      Company, Inc.'s Current Report on Form 8-K, filed on March 19, 2008 (SEC      File No. 333-129780)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| 4.1     | Form      of Common Stock Certificate of Sterling Construction Company, Inc.      (incorporated by reference to Exhibit 4.5 to its Form 8-A, filed on      January 11, 2006 (SEC File No. 01-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| 10.1#   | Oakhurst      Company, Inc. 2001 Stock Incentive Plan (incorporated by reference to      Exhibit 10.6 to Sterling Construction Company, Inc.'s Registration      Statement on Form S-1, filed on November 17, 2005 (SEC File No.      333-129780)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| 10.2#   | Forms      of Stock Option Agreement under the Oakhurst Company, Inc. 2001 Stock      Incentive Plan (incorporated by reference to Exhibit 10.51 to Sterling      Construction Company, Inc.'s Annual Report on Form 10-K for the year ended      December 31, 2004, filed on March 29, 2005 (SEC File No.      001-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| 10.3#   | Summary      of the Compensation Plan for Non Employee Directors of Sterling      Construction Company, Inc. (incorporated by reference to Exhibit 10.1 to      Sterling Construction Company, Inc.'s Quarterly Report on Form 10-Q, filed      on August 11, 2008 (SEC File No. 333-129780)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 10.4    | Credit      Agreement by and among Sterling Construction Company, Inc., Texas Sterling      Construction Co., Oakhurst Management Corporation and Comerica Bank and      the other lenders from time to time party thereto, and Comerica Bank as      administrative agent for the lenders, dated as of October 31, 2007      (incorporated by reference to Exhibit 10.1 to Sterling Construction      Company, Inc.'s Current Report on Form 8-K, Amendment No. 1, filed on      November 21, 2007 (SEC File No. 01-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| 10.5    | Security      Agreement by and among Sterling Construction Company, Inc., Texas Sterling      Construction Co., Oakhurst Management Corporation and Comerica Bank as      administrative agent for the lenders, dated as of October 31, 2007      (incorporated by reference to Exhibit 10.2 to Sterling Construction      Company, Inc.'s Current Report on Form 8-K, Amendment No. 1, filed on      November 21, 2007 (SEC File No. 01-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| 10.6    | Joinder      Agreement by Road and Highway Builders, LLC and Road and Highway Builders      Inc, dated as of October 31, 2007 (incorporated by reference to Exhibit      10.3 to Sterling Construction Company, Inc.'s Current Report on Form 8-K,      Amendment No. 1 filed on November 21, 2007 (SEC File No.      1-31993)).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| 10.7#   | Employment      Agreement dated as of July 19, 2007 between Sterling Construction Company,      Inc. and Patrick T. Manning (incorporated by reference to Exhibit 10.1 to      Sterling Construction Company, Inc.'s Current Report on Form 8-K filed on      January 17, 2008 (SEC File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| 10.8#   | Employment      Agreement dated as of July 19, 2007 between Sterling Construction Company,      Inc. and Joseph P. Harper, Sr. (incorporated by reference to Exhibit 10.2      to Sterling Construction Company, Inc.'s Current Report on Form 8-K filed      on January 17, 2008 (SEC File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| 10.09#  | Employment      Agreement dated as of July 16, 2007 between Sterling Construction Company,      Inc. and James H. Allen, Jr. (incorporated by reference to Exhibit 10.3 to      Sterling Construction Company, Inc.'s Current Report on Form 8-K filed on      January 17, 2008 (SEC File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| 10.10#  | Option      Agreement dated August 7, 2007 between Sterling Construction Company, Inc.      and James H. Allen, Jr. (incorporated by reference to Exhibit 10.4 to      Sterling Construction Company, Inc.'s Current Report on Form 8-K filed on      January 17, 2008 (SEC File No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 10.11#  | Employment      Agreement dated as of March 17, 2006 between Sterling Construction      Company, Inc. and Roger M. Barzun (incorporated by reference to Exhibit      10.11 to Sterling Construction Company, Inc.'s Annual Report on Form 10-K      for the year ended December 31, 2008, filed on March 16, 2009 (SEC File      No. 1-31993))                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 10.12#* | Employment      Agreement dated as of December 3, 2009 between Ralph L. Wadsworth      Construction Company, LLC and Kip L. Wadsworth.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| 21      | Subsidiaries      of Sterling Construction Company, Inc.:Name                                                                                                                  State of IncorporationTexas      Sterling Construction      Co.                                                               DelawareRoad      and Highway Builders,      LLC                                                             NevadaRoad      and Highway Builders      Inc.                                                               NevadaRoad      and Highway Builders of California,      Inc.                                       CaliforniaRalph      L. Wadsworth Construction Company,      LLC                                Utah |
| 23.1+   | Consent      of Grant Thornton LLP                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| 31.1*   | Certification      of Patrick T. Manning, Chief Executive Officer of Sterling Construction      Company, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| 31.2*   | Certification      of James H. Allen, Jr., Chief Financial Officer of Sterling Construction      Company, Inc.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| 32.0+   | Certification      pursuant to Section 1350 of Chapter 63 of Title 18 of the United States      Code (18 U.S.C. 1350) of Patrick T. Manning, Chief Executive Officer, and      James H. Allen, Jr., Chief FinancialOfficer.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |

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