----

----

| x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|---|-----------------------------------------------------------------------------------------|

| o | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
|---|------------------------------------------------------------------------------------------|

| MASSACHUSETTS                                                  |   | 04-1717070                           |
|----------------------------------------------------------------|--------|--------------------------------------|
| (State or other jurisdiction of incorporation or organization) |   | (I.R.S. Employer Identification No.) |

| Large accelerated filer o | Accelerated filer x | Non-Accelerated filer  o | Smaller reporting company  o |
|---------------------------|---------------------|------------------------------------|----------------------------------------|

----

----

----

INDEX

|       |                   | Page Number                                                                                                               |
|------------|------------------------|---------------------------------------------------------------------------------------------------------------------------|
| Part I. -  | Financial Information: |                                                                                                                      |
|       |                   |                                                                                                                      |   |
|       | Item 1.                | Financial Statements                                                                                                      |   |
|       |                   |                                                                                                                      |   |
|       |                   | Consolidated Condensed Balance Sheets – March 31, 2011 (unaudited) and December 31, 2010 (unaudited)                | 3 |
|       |                   |                                                                                                                      |   |
|       |                   | Consolidated Condensed Statements of Operations – Three Months ended March 31, 2011 and 2010 (unaudited)            | 4 |
|       |                   |                                                                                                                      |   |
|       |                   | Consolidated Condensed Statement of Stockholders’ Equity – Three Months ended March 31, 2011 (unaudited)      | 5 |
|       |                   |                                                                                                                      |   |
|       |                   | Consolidated Condensed Statements of Cash Flows  – Three Months ended March 31, 2011 and 2010 (unaudited) | 6 |
|       |                   |                                                                                                                      |   |
|       |                   | Notes to Consolidated Condensed Financial Statements                                                                      | 7 – 28 |
|       |                   |                                                                                                                      |   |
|       | Item 2.                | Management's Discussion and Analysis of Financial Condition and Results of Operations                                     | 29 – 35 |
|       |                   |                                                                                                                      |   |
|       | Item 3.                | Quantitative and Qualitative Disclosures About Market Risk                                                                | 35 |
|       |                   |                                                                                                                      |   |
|       | Item 4.                | Controls and Procedures                                                                                                   | 35 |
|       |                   |                                                                                                                      |   |
| Part II. - | Other Information:     |                                                                                                                      |
|       |                   |                                                                                                                      |   |
|       | Item 1.                | Legal Proceedings                                                                                                         | 36 |
|       |                   |                                                                                                                      |   |
|       | Item 1A.               | Risk Factors                                                                                                              | 36 |
|       |                   |                                                                                                                      |   |
|       | Item 2.                | Unregistered Sales of Equity Securities and Use of Proceeds                                                               | 36 |
|       |                   |                                                                                                                      |   |
|       | Item 3.                | Defaults Upon Senior Securities                                                                                           | 36 |
|       |                   |                                                                                                                      |   |
|       | Item 4.                | (Removed and Reserved)                                                                                                    | 36 |
|       |                   |                                                                                                                      |   |
|       | Item 5.                | Other Information                                                                                                         | 36 |
|       |                   |                                                                                                                      |   |
|       | Item 6.                | Exhibits                                                                                                                  | 36 – 37 |
|       |                   |                                                                                                                      |   |
|       | Signatures             | 38                                                                                                                        |

----

Index

 BALANCE SHEETS 

|                                                                                                                              |   | MARCH 31, |      |   | DECEMBER 31, |   |
|-----------------------------------------------------------------------------------------------------------------------------------|--------|----------------|-----------|--------|-------------------|--------|
|                                                                                                                              |   | 2011           |      |   | 2010              |   |
| ASSETS                                                                                                                            |   |           |      |   |              |   |
| Cash and Cash Equivalents                                                                                                         |   | $              | 367,106   |   |              | $      | 471,378 |   |
| Restricted Cash                                                                                                                   |   |           | 28,008    |   |              |   | 23,550 |   |
| Accounts Receivable, including retainage                                                                                          |   |           | 911,172   |   |              |   | 880,614 |   |
| Costs and Estimated Earnings in Excess of Billings                                                                                |   |           | 172,540   |   |              |   | 139,449 |   |
| Deferred Income Taxes                                                                                                             |   |           | 3,782     |   |              |   | 3,737 |   |
| Other Current Assets                                                                                                              |   |           | 35,372    |   |              |   | 42,314 |   |
| Total Current Assets                                                                                                              |   |           | 1,517,980 |   |              |   | 1,561,042 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| Long-term Investments                                                                                                             |   |           | 88,129    |   |              |   | 88,129 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| Property and Equipment (net of Accumulated Depreciation of $87,162 in 2011 and $79,942 in 2010)                              |   |           | 373,450   |   |              |   | 362,437 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| Other Assets:                                                                                                                     |   |           |      |   |              |   |   |   |
| Goodwill                                                                                                                          |   |           | 651,429   |   |              |   | 621,920 |   |
| Intangible Assets, net                                                                                                            |   |           | 151,081   |   |              |   | 132,551 |   |
| Other                                                                                                                             |   |           | 15,644    |   |              |   | 13,141 |   |
|                                                                                                                              |   | $              | 2,797,713 |   |              | $      | 2,779,220 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| LIABILITIES AND STOCKHOLDERS’ EQUITY                                                                                        |   |           |      |   |              |   |   |   |
| Current Maturities of Long-term Debt                                                                                              |   | $              | 14,217    |   |              | $      | 21,334 |   |
| Accounts Payable, including retainage                                                                                             |   |           | 597,659   |   |              |   | 653,542 |   |
| Billings in Excess of Costs and Estimated Earnings                                                                                |   |           | 235,873   |   |              |   | 199,750 |   |
| Accrued Expenses                                                                                                                  |   |           | 93,844    |   |              |   | 93,488 |   |
| Total Current Liabilities                                                                                                         |   |           | 941,593   |   |              |   | 968,114 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| Long-term Debt, less current maturities                                                                                           |   |           | 408,179   |   |              |   | 374,350 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| Deferred Income Taxes                                                                                                             |   |           | 78,716    |   |              |   | 79,082 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| Other Long-term Liabilities                                                                                                       |   |           | 45,625    |   |              |   | 44,680 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| Contingencies and Commitments                                                                                                     |   |           |      |   |              |   |   |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
| Stockholders’ Equity:                                                                                                       |   |           |      |   |              |   |   |   |
| Common Stock - $1 par value: 75,000,000 shares authorized; Shares issued and outstanding: 47,122,926 and 47,089,593, respectively |   |           | 47,123    |   |              |   | 47,090 |   |
| Additional Paid-in Capital                                                                                                        |   |           | 989,013   |   |              |   | 985,413 |   |
| Retained Earnings                                                                                                                 |   |           | 323,460   |   |              |   | 316,531 |   |
| Accumulated Other Comprehensive Loss                                                                                              |   |           | (35,996   | )      |              |   | (36,040 | ) |
| Total Stockholders' Equity                                                                                                        |   |           | 1,323,600 |   |              |   | 1,312,994 |   |
|                                                                                                                              |   |           |      |   |              |   |   |   |
|                                                                                                                              |   | $              | 2,797,713 |   |              | $      | 2,779,220 |   |

----

Index

STATEMENTS OF OPERATIONS 

|                                            |   | THREE MONTHS ENDED |    |
|-------------------------------------------------|--------|--------------------|---------|
|                                            |   | MARCH 31,          |    |
|                                            |   |               |    |   |   |   |
|                                            |   | 2011               |    |   | 2010 |   |
|                                            |   |               |    |
| Revenues                                        |   | $                  | 615,289 |   |   | $ | 865,075 |   |
|                                            |   |               |    |   |   |   |   |   |
| Cost of Operations                              |   |               | 552,826 |   |   |   | 788,942 |   |
|                                            |   |               |    |   |   |   |   |   |
| Gross Profit                                    |   |               | 62,463  |   |   |   | 76,133 |   |
|                                            |   |               |    |   |   |   |   |   |
| General and Administrative Expenses             |   |               | 43,950  |   |   |   | 41,976 |   |
|                                            |   |               |    |   |   |   |   |   |
| INCOME FROM CONSTRUCTION OPERATIONS             |   |               | 18,513  |   |   |   | 34,157 |   |
|                                            |   |               |    |   |   |   |   |   |
| Other Income (Expense), net                     |   |               | (447    | ) |   |   | 345 |   |
| Interest Expense                                |   |               | (7,155  | )  |   |   | (1,521 | ) |
|                                            |   |               |    |   |   |   |   |   |
| Income before Income Taxes                      |   |               | 10,911  |   |   |   | 32,981 |   |
|                                            |   |               |    |   |   |   |   |   |
| Provision for Income Taxes                      |   |               | (3,982  | ) |   |   | (12,048 | ) |
|                                            |   |               |    |   |   |   |   |   |
| NET INCOME                                      |   | $                  | 6,929   |   |   | $ | 20,933 |   |
|                                            |   |               |    |   |   |   |   |   |
|                                            |   |               |    |   |   |   |   |   |
| BASIC EARNINGS PER COMMON SHARE                 |   | $                  | 0.15    |   |   | $ | 0.43 |   |
|                                            |   |               |    |   |   |   |   |   |
| DILUTED EARNINGS PER COMMON SHARE               |   | $                  | 0.14    |   |   | $ | 0.42 |   |
|                                            |   |               |    |   |   |   |   |   |
|                                            |   |               |    |   |   |   |   |   |
| WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:     |   |               |    |   |   |   |   |   |
|                                            |   |               |    |   |   |   |   |   |
| BASIC                                           |   |               | 47,100  |   |   |   | 49,025 |   |
| Effect of Dilutive Stock Options and Restricted |   |               |    |   |   |   |   |   |
| Stock Units Outstanding                         |   |               | 762     |   |   |   | 337 |   |
|                                            |   |               |    |   |   |   |   |   |
| DILUTED                                         |   |               | 47,862  |   |   |   | 49,362 |   |

----

Index

STOCKHOLDERS' EQUITY 

|                                   |   |   |   |   |       |   |    |     |   |   | Accumulated   |   |   |   |    |
|----------------------------------------|--------|--------|--------|--------|------------|--------|---------|----------|--------|--------|---------------|--------|--------|--------|---------|
|                                   |   |   |   |   | Additional |   |    |     |   |   | Other         |   |   |   |    |
|                                   |   | Common |   |   | Paid-in    |   |    | Retained |   |   | Comprehensive |   |   |   |    |
|                                   |   | Stock  |   |   | Capital    |   |    | Earnings |   |   | Loss          |   |   | Total  |
|                                   |   |   |   |   |       |   |    |     |   |   |          |   |   |   |
| Balance - December 31, 2010            |   | $      | 47,090 |   |       | $      | 985,413 |     |   | $      | 316,531       |   |   | $      | (36,040 | ) |   | $ | 1,312,994 |   |
|                                   |   |   |   |   |       |   |    |     |   |   |          |   |   |   |    |   |   |   |   |   |
| Net Income                             |   |   | -      |   |       |   | -       |     |   |   | 6,929         |   |   |   | -       |   |   |   | 6,929 |   |
|                                   |   |   |   |   |       |   |    |     |   |   |          |   |   |   |    |   |   |   |   |   |
| Other comprehensive income (loss):     |   |   |   |   |       |   |    |     |   |   |          |   |   |   |    |   |   |   |   |   |
| Foreign currency translation           |   |   | -      |   |       |   | -       |     |   |   | -             |   |   |   | 44      |   |   |   | 44 |   |
| Total comprehensive income             |   |   |   |   |       |   |    |     |   |   |          |   |   |   |    |   |   |   | 6,973 |   |
|                                   |   |   |   |   |       |   |    |     |   |   |          |   |   |   |    |   |   |   |   |   |
| Tax effect of stock-based compensation |   |   | -      |   |       |   | 18      |     |   |   | -             |   |   |   | -       |   |   |   | 18 |   |
|                                   |   |   |   |   |       |   |    |     |   |   |          |   |   |   |    |   |   |   |   |   |
| Stock-based compensation expense       |   |   | -      |   |       |   | 3,615   |     |   |   | -             |   |   |   | -       |   |   |   | 3,615 |   |
|                                   |   |   |   |   |       |   |    |     |   |   |          |   |   |   |    |   |   |   |   |   |
| Issuance of Common Stock, net          |   |   | 33     |   |       |   | (33     | )        |   |   | -             |   |   |   | -       |   |   |   | - |   |
|                                   |   |   |   |   |       |   |    |     |   |   |          |   |   |   |    |   |   |   |   |   |
| Balance - March 31, 2011               |   | $      | 47,123 |   |       | $      | 989,013 |     |   | $      | 323,460       |   |   | $      | (35,996 | ) |   | $ | 1,323,600 |   |

----

Index

CASH FLOWS 

|                                                                              |   | THREE MONTHS ENDED |     |
|-----------------------------------------------------------------------------------|--------|--------------------|----------|
|                                                                              |   | MARCH 31,          |     |
|                                                                              |   | 2011               |     |   | 2010 |   |
| Cash Flows from Operating Activities:                                             |   |               |     |   |   |   |
| Net Income                                                                        |   | $                  | 6,929    |   |   | $ | 20,933 |   |
| Adjustments to reconcile Net Income to net cash from operating activities:        |   |               |     |   |   |   |   |   |
| Depreciation and amortization                                                     |   |               | 8,043    |   |   |   | 8,030 |   |
| Stock-based compensation expense                                                  |   |               | 3,615    |   |   |   | 3,909 |   |
| Excess income tax benefit from stock-based compensation                           |   |               | (18      | ) |   |   | - |   |
| Deferred Income Taxes                                                             |   |               | (411     | ) |   |   | (1,137 | ) |
| Loss on sale of equipment                                                         |   |               | 596      |   |   |   | - |   |
| Other Long-term Liabilities                                                       |   |               | (243     | ) |   |   | (4,089 | ) |
| Other non-cash items                                                              |   |               | 64       |   |   |   | (57 | ) |
| Changes in other components of working capital                                    |   |               | (66,229  | ) |   |   | (87,880 | ) |
|                                                                              |   |               |     |   |   |   |   |   |
| NET CASH USED IN  OPERATING ACTIVITIES                                  |   |               | (47,654  | ) |   |   | (60,291 | ) |
|                                                                              |   |               |     |   |   |   |   |   |
| Cash Flows from Investing Activities:                                             |   |               |     |   |   |   |   |   |
| Acquisition of Fisk Electric Company, net of cash balance acquired                |   |               | (70,620  | ) |   |   | - |   |
| Business acquisition related payments                                             |   |               | (3,000   | ) |   |   | - |   |
| Acquisition of Property and Equipment                                             |   |               | (8,932   | ) |   |   | (4,188 | ) |
| Proceeds from sale of Property and Equipment                                      |   |               | 893      |   |   |   | 573 |   |
| Proceeds from sale of available-for-sale securities                               |   |               | -        |   |   |   | 375 |   |
| Change in Restricted Cash                                                         |   |               | (8       | ) |   |   | (23,523 | ) |
| Investment in other activities                                                    |   |               | -        |   |   |   | 285 |   |
|                                                                              |   |               |     |   |   |   |   |   |
| NET CASH USED IN INVESTING ACTIVITIES                                             |   |               | (81,667  | ) |   |   | (26,478 | ) |
|                                                                              |   |               |     |   |   |   |   |   |
| Cash Flows from Financing Activities:                                             |   |               |     |   |   |   |   |   |
| Proceeds from Debt                                                                |   |               | 58,175   |   |   |   | 4,664 |   |
| Repayment of Debt                                                                 |   |               | (33,119  | ) |   |   | (7,910 | ) |
| Excess income tax benefit from stock-based compensation                           |   |               | 18       |   |   |   | - |   |
| Issuance of Common Stock and effect of cashless exercise                          |   |               | -        |   |   |   | (203 | ) |
| Debt issuance costs                                                               |   |               | (25      | ) |   |   | (1,164 | ) |
|                                                                              |   |               |     |   |   |   |   |   |
| NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES                               |   |               | 25,049   |   |   |   | (4,613 | ) |
|                                                                              |   |               |     |   |   |   |   |   |
| Net Decrease in Cash and Cash Equivalents                                         |   |               | (104,272 | ) |   |   | (91,382 | ) |
| Cash and Cash Equivalents at Beginning of Year                                    |   |               | 471,378  |   |   |   | 348,309 |   |
|                                                                              |   |               |     |   |   |   |   |   |
| Cash and Cash Equivalents at End of Period                                        |   | $                  | 367,106  |   |   | $ | 256,927 |   |
|                                                                              |   |               |     |   |   |   |   |   |
| Supplemental Disclosure of Cash Paid During the Period For:                       |   |               |     |   |   |   |   |   |
| Interest                                                                          |   | $                  | 1,091    |   |   | $ | 1,197 |   |
| Income taxes                                                                      |   | $                  | 1,296    |   |   | $ | 366 |   |
|                                                                              |   |               |     |   |   |   |   |   |
| Supplemental Disclosure of Non-cash Transactions:                                 |   |               |     |   |   |   |   |   |
| Property and Equipment acquired through financing arrangements                    |   | $                  | 1,604    |   |   | $ | 4,754 |   |
| Property and Equipment additions accrued in accounts payable                      |   | $                  | 3,331    |   |   | $ | - |   |
|     Grant date fair value of common stock issued for services |   | $                  | 717      |   |   | $ | 15,263 |   |

----

Index

NOTES 

| (1) | Basis of Presentation |
|-----|-----------------------|

| (2) | Significant Accounting Policies |
|-----|---------------------------------|

| (3) | Cash, Cash Equivalents and Restricted Cash |
|-----|--------------------------------------------|

|                                                       |   | March 31, |    |   | December 31, |   |
|------------------------------------------------------------|--------|----------------|---------|--------|-------------------|--------|
|                                                       |   | 2011           |    |   | 2010              |   |
|                                                       |   |           |    |
| Corporate Cash and Cash Equivalents                        |   | $              | 338,880 |   |              | $      | 455,464 |   |
|                                                       |   |           |    |   |              |   |   |   |
| Company's share of joint venture Cash and Cash Equivalents |   |           | 28,226  |   |              |   | 15,914 |   |
| Total Cash and Cash Equivalents                            |   | $              | 367,106 |   |              | $      | 471,378 |   |
|                                                       |   |           |    |   |              |   |   |   |
| Restricted Cash                                            |   | $              | 28,008  |   |              | $      | 23,550 |   |

----

Index

| (4) | Fair Value Measurements |
|-----|-------------------------|

|                                                      |   |                                |    |   | Fair Value Measurements at March 31, 2011 Using |
|-----------------------------------------------------------|--------|-------------------------------------|---------|--------|-------------------------------------------------|
|                                                      |   | TotalCarryingValue atMarch 31, 2011 |    |   | Quotedprices inactivemarkets(Level 1)           |   |   | Significant other observable inputs(Level 2) |   |   | Significant unobservable inputs(Level 3) |   |
|                                                      |   |                                |    |
| Cash and Cash Equivalents (1)                             |   | $                                   | 367,106 |   |                                            | $ | 367,106 |   |   | $ | - |   |   | $ | - |   |
| Restricted Cash (1)                                       |   |                                | 28,008  |   |                                            |   | 28,008 |   |   |   | - |   |   |   | - |   |
| Short-term Investments (2)                                |   |                                | 29      |   |                                            |   | 29 |   |   |   | - |   |   |   | - |   |
| Long-term Investments – Auction rate securities (3) |   |                                | 88,129  |   |                                            |   | - |   |   |   | - |   |   |   | 88,129 |   |
| Total                                                     |   | $                                   | 483,272 |   |                                            | $ | 395,143 |   |   | $ | - |   |   | $ | 88,129 |   |

|                                                      |   |                                  |    |   | Fair Value Measurements at December 31, 2010 Using |   |
|-----------------------------------------------------------|--------|---------------------------------------|---------|--------|----------------------------------------------------|--------|
|                                                      |   | TotalCarryingValue atDecember 31,2010 |    |   | Quotedprices inactivemarkets(Level 1)              |   |   | Significant other observable inputs(Level 2) |   |   | Significant unobservable inputs (Level 3) |   |
|                                                      |   |                                  |    |
| Cash and cash equivalents (1)                             |   | $                                     | 471,378 |   |                                               | $      | 471,378 |   |   | $ | - |   |   | $ | - |   |
| Restricted cash (1)                                       |   |                                  | 23,550  |   |                                               |   | 23,550 |   |   |   | - |   |   |   | - |   |
| Short-term investments (2)                                |   |                                  | 28      |   |                                               |   | 28 |   |   |   | - |   |   |   | - |   |
| Long-term Investments – Auction rate securities (3) |   |                                  | 88,129  |   |                                               |   | - |   |   |   | - |   |   |   | 88,129 |   |
| Total                                                     |   | $                                     | 583,085 |   |                                               | $      | 494,956 |   |   | $ | - |   |   | $ | 88,129 |   |

----

|   | (1) | Cash, Cash Equivalents and Restricted Cash consist primarily of money market funds with original maturity dates of three months or less, for which fair value is determined through quoted market prices. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (2) | Short-term Investments are included in Other Current Assets and consist of an S&P 500 index mutual fund for which fair value is determined through quoted market prices. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (3) | At March 31, 2011 and December 31, 2010, the Company had $88.1 million invested in auction rate securities (“ARS”) which the Company considers as available-for-sale.  The majority of the ARS held by the Company at March 31, 2011, are in securities collateralized by student loan portfolios, totaling $67.9 million, which are guaranteed by the U.S. government.  Additional amounts totaling $12.2 million are invested in securities collateralized by student loan portfolios, which are privately insured.  The remainder of the securities, totaling $8.0 million, is invested in tax-exempt bonds.  Most of the Company’s ARS are rated AAA or AA.  The Company estimated the fair value of its ARS utilizing an income approach valuation model which considered, among other items, the following inputs: (i) the underlying structure of each security; (ii) the present value of future principal and interest payments discounted at rates considered to reflect current market conditions; and (iii) consideration of the probabilities of default or repurchase at par for each period. |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

Index

| (4) | Fair Value Measurements (continued) |
|-----|-------------------------------------|

|                         |   | Auction Rate |   |
|------------------------------|--------|--------------|--------|
|                         |   | Securities   |   |
|                         |   |         |   |
| Balance at December 31, 2010 |   | $            | 88,129 |   |
| Settlements                  |   |         | -      |   |
| Balance at March 31, 2011    |   | $            | 88,129 |   |

|                         |   | Auction Rate |    |
|------------------------------|--------|--------------|---------|
|                         |   | Securities   |    |
|                         |   |         |    |
| Balance at December 31, 2009 |   | $            | 101,201 |   |
| Settlements                  |   |         | (375    | ) |
| Balance at March 31, 2010    |   | $            | 100,826 |   |

| (5) | Goodwill and Intangible Assets |
|-----|--------------------------------|

|                                                         |   |     |     |   |   |   |    | Management |   |   |    |   |
|--------------------------------------------------------------|--------|----------|----------|--------|--------|--------|---------|------------|--------|--------|---------|--------|
|                                                         |   | Building |     |   | Civil  |   |    | Services   |   |   | Total   |   |
|                                                         |   |     |     |   |   |   |    |       |   |   |    |   |
| Gross Goodwill                                               |   | $        | 402,926  |   |   | $      | 319,254 |       |   | $      | 66,638  |   |   | $ | 788,818 |   |
| Accumulated impairment                                       |   |     | (146,847 | )      |   |   | -       |       |   |   | (20,051 | )      |   |   | (166,898 | ) |
| Balance at December 31, 2010                                 |   |     | 256,079  |   |   |   | 319,254 |       |   |   | 46,587  |   |   |   | 621,920 |   |
| Goodwill recorded in connection with the acquisition of Fisk |   |     | 29,509   |   |   |   | -       |       |   |   | -       |   |   |   | 29,509 |   |
| Balance at March 31, 2011                                    |   | $        | 285,588  |   |   | $      | 319,254 |       |   | $      | 46,587  |   |   | $ | 651,429 |   |

----

Index

| (5) | Goodwill and Intangible Assets (continued) |
|-----|--------------------------------------------|

|                                    |   | As of March 31, 2011  |    |
|-----------------------------------------|--------|-----------------------|---------|
|                                    |   | Gross Carrying Amount |    |   | AccumulatedAmortization |   |   | CarryingValue |   |
| Trade names                        |   | $                     | 114,350 |   |   | $ | - |   |   | $ | 114,350 |   |
| Contractor license                 |   |                  | 5,320   |   |   |   | - |   |   |   | 5,320 |   |
| Customer relationships             |   |                  | 36,600  |   |   |   | (7,943 | ) |   |   | 28,657 |   |
| Construction contract backlog |   |                  | 36,840  |   |   |   | (34,086 | ) |   |   | 2,754 |   |
| Total                                   |   | $                     | 193,110 |   |   | $ | (42,029 | ) |   | $ | 151,081 |   |

|                                    |   | As of December 31, 2010 |    |
|-----------------------------------------|--------|-------------------------|---------|
|                                    |   | Gross Carrying Amount   |    |   | AccumulatedAmortization |   |   | CarryingValue |   |
| Trade names                        |   | $                       | 101,250 |   |   | $ | - |   |   | $ | 101,250 |   |
| Contractor license                 |   |                    | 5,320   |   |   |   | - |   |   |   | 5,320 |   |
| Customer relationships             |   |                    | 31,700  |   |   |   | (7,113 | ) |   |   | 24,587 |   |
| Construction contract backlog |   |                    | 34,540  |   |   |   | (33,146 | ) |   |   | 1,394 |   |
| Total                                   |   | $                       | 172,810 |   |   | $ | (40,259 | ) |   | $ | 132,551 |   |

| (6) | Contingencies and Commitments |
|-----|-------------------------------|

----

Index

| (6) | Contingencies and Commitments (continued) |
|-----|-------------------------------------------|

----

Index

| (6) | Contingencies and Commitments (continued) |
|-----|-------------------------------------------|

----

Index

| (6) | Contingencies and Commitments (continued) |
|-----|-------------------------------------------|

----

Index

| (6) | Contingencies and Commitments (continued) |
|-----|-------------------------------------------|

----

Index

| (6) | Contingencies and Commitments (continued) |
|-----|-------------------------------------------|

| (7) | Common Stock Repurchase Program |
|-----|---------------------------------|

| (8) | Stock-Based Compensation |
|-----|--------------------------|

----

Index

| (8) | Stock-Based Compensation (continued) |
|-----|--------------------------------------|

|                                        |   |      |      |   | Weighted Average |   |   | Aggregate |   |
|---------------------------------------------|--------|-----------|-----------|--------|------------------|--------|--------|-----------|--------|
|                                        |   | Number    |      |   | Grant Date       |   |   | Intrinsic |   |
|                                        |   | of Shares |      |   | Fair Value       |   |   | Value     |   |
| Granted and Unvested - January 1, 2011      |   |      | 1,220,833 |   |             | $      | 21.62  |      |   | $ | 26,138,035 |   |
| Vested                                      |   |      | (33,333   | )      |             |   | 21.52  |      |   |   | 768,492 |   |
| Granted                                     |   |      | 269,998   |   |             |   | 24.36  |      |   |   | 6,577,151 |   |
| Forfeited                                   |   |      | (20,000   | )      |             |   | 26.19  |      |   |   | - |   |
| Total Granted and Unvested                  |   |      | 1,437,498 |   |             |   | 22.05  |      |   |   | 35,017,451 |   |
| Approved for grant                          |   |      | 431,669   |   |             | (a)    |   |      |   |   |   |
| Total Awarded and Unvested - March 31, 2011 |   |      | 1,869,167 |   |             | n.a.   |   |      |   | 45,532,908 |   |

----

|   | (a) | Grant date fair value cannot be determined currently because the related performance targets for future years have not yet been established by the Compensation Committee. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|         |   | Number         |      |
|--------------|--------|----------------|-----------|
| Vesting Date |   | of Awards |      |
|         |   |           |      |
| 2011         |   |           | 200,000   |   |
| 2012         |   |           | 294,998   |   |
| 2013         |   |           | 1,162,500 |   |
| 2014         |   |           | 211,669   |   |
| Total        |   |           | 1,869,167 |   |

----

Index

| (8) | Stock-Based Compensation (continued) |
|-----|--------------------------------------|

|                                            |   |      |      |   | Weighted Average |   |
|-------------------------------------------------|--------|-----------|-----------|--------|------------------|--------|
|                                            |   | Number    |      |   | Grant Date       |   |   | Exercise |   |
|                                            |   | of Shares |      |   | Fair Value       |   |   | Price |   |
| Total Awarded and Outstanding - January 1, 2011 |   |      | 1,040,000 |   |             | $      | 11.18 |   |   | $ | 20.50 |   |
| Granted                                         |   |      | 150,000   |   |             |   | 13.35 |   |   |   | 20.33 |   |
| Forfeited                                       |   |      | (20,000   | )      |             |   | 14.84 |   |   |   | 26.19 |   |
| Total Granted and Outstanding                   |   |      | 1,170,000 |   |             |   | 11.40 |   |   |   | 20.38 |   |
| Approved for grant                              |   |      | 300,000   |   |             | (a)    |   |   |   | 20.33 |   |
| Total Awarded and Outstanding - March 31, 2011  |   |      | 1,470,000 |   |             | n.a.   |   |   |   | 20.37 |   |

|   | (a) | Grant date fair value cannot be determined currently because the related performance targets for future years have not yet been established by the Compensation Committee. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| Risk-free interest rate                  |   |       | 2.74  | % |
|------------------------------------------|--------|------------|-------|---|
| Expected life of options                 |   | 6.5 yearss |
| Expected volatility of underlying stock  |   |       | 46.94 | % |
| Expected quarterly dividends (per share) |   |       | $0.00 |

| (9) | Financial Commitments |
|-----|-----------------------|

----

Index

| (9) | Financial Commitments (continued) |
|-----|-----------------------------------|

----

Index

| (9)  | Financial Commitments (continued) |
|-----------|-----------------------------------|

| (10) | Earnings per Common Share |
|------|---------------------------|

----

Index

| (11) | Business Segmnts |
|------|------------------|

|                |   | Three Months Ended March 31, 2011 |
|---------------------|--------|----------------------------------------|
|                |   | Revenues                               |   |   | Income from Construction Operations |   |
|                |   |                                   |   |   |   |   |
| Building            |   | $                                      | 440,429 |   |   | $ | 13,118 |   |
| Civil               |   |                                   | 128,825 |   |   |   | 12,114 |   |
| Management Services |   |                                   | 46,035 |   |   |   | 2,641 |   |
|                |   |                                   | 615,289 |   |   |   | 27,873 |   |
| Corporate *         |   |                                   | - |   |   |   | (9,360 | ) |
| Total               |   | $                                      | 615,289 |   |   | $ | 18,513 |   |

|                |   | Three Months Ended March 31, 2010 |    |
|---------------------|--------|----------------------------------------|---------|
|                |   | Revenues                               |    |   | Income from Construction Operations |   |
|                |   |                                   |    |   |   |   |
| Building            |   |                                   | 686,284 |   |   |   | 32,310 |   |
| Civil               |   |                                   | 124,660 |   |   |   | 8,290 |   |
| Management Services |   |                                   | 54,131  |   |   |   | 3,093 |   |
|                |   |                                   | 865,075 |   |   |   | 43,693 |   |
| Corporate *         |   |                                   | -       |   |   |   | (9,536 | ) |
| Total               |   |                                   | 865,075 |   |   |   | 34,157 |   |

| (12) | Employee Pension Plans |
|------|------------------------|

|                           |   | Three Months    |   |
|--------------------------------|--------|-----------------|--------|
|                           |   | Ended March 31, |   |
|                           |   | 2011            |   |   | 2010 |   |
| Interest cost                  |   | $               | 1,108  |   |   | $ | 1,139 |   |
| Expected return on plan assets |   |            | (1,254 | ) |   |   | (1,241 | ) |
| Amortization of net loss       |   |            | 992    |   |   |   | 612 |   |
|                           |   |            |   |   |   |   |   |   |
| Net periodic benefit cost      |   | $               | 846    |   |   | $ | 510 |   |

----

Index

| (12) | Employee Pension Plans (continued) |
|------|------------------------------------|

| (13) | Related Party Transactions |
|------|----------------------------|

----

Index

| (15)  | Separate Financial Information of Subsidiary Guarantors of Indebtedness |
|------------|-------------------------------------------------------------------------|

----

Index

|                                               |   | Tutor Perini Corporation |      |   | Guarantor Subsidiaries |   |      | Non-Guarantor Subsidiaries |   |   | Eliminations |   |   | Total Consolidated |       |
|----------------------------------------------------|--------|--------------------------|-----------|--------|------------------------|--------|-----------|----------------------------|--------|--------|--------------|--------|--------|--------------------|------------|
| ASSETS                                             |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |
| Cash and Cash Equivalents                          |   | $                        | 175,324   |   |                   | $      | 151,847   |                       |   | $      | 39,935       |   |   | $                  | -          |   |   | $ | 367,106 |   |
| Restricted Cash                                    |   |                     | 23,558    |   |                   |   | -         |                       |   |   | 4,450        |   |   |               | -          |   |   |   | 28,008 |   |
| Accounts Receivable                                |   |                     | 102,716   |   |                   |   | 789,594   |                       |   |   | 84,505       |   |   |               | (65,643    | ) |   |   | 911,172 |   |
| Costs and Estimated Earnings in Excess of Billings |   |                     | 96,704    |   |                   |   | 55,688    |                       |   |   | 20,148       |   |   |               | -          |   |   |   | 172,540 |   |
| Deferred Income Taxes                              |   |                     | 3,516     |   |                   |   | 266       |                       |   |   | -            |   |   |               | -          |   |   |   | 3,782 |   |
| Other Current Assets                               |   |                     | 15,074    |   |                   |   | 17,529    |                       |   |   | 7,285        |   |   |               | (4,516     | ) |   |   | 35,372 |   |
| Total Current Assets                               |   |                     | 416,892   |   |                   |   | 1,014,924 |                       |   |   | 156,323      |   |   |               | (70,159    | ) |   |   | 1,517,980 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Long-term Investments                              |   |                     | 88,129    |   |                   |   | -         |                       |   |   | -            |   |   |               | -          |   |   |   | 88,129 |   |
| Property and Equipment, net                        |   |                     | 44,419    |   |                   |   | 319,219   |                       |   |   | 9,812        |   |   |               | -          |   |   |   | 373,450 |   |
| Intercompany Notes and Receivables                 |   |                     | 13,155    |   |                   |   | 478,425   |                       |   |   | (5,124       | )      |   |               | (486,456   | ) |   |   | - |   |
| Other Assets:                                      |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Goodwill                                           |   |                     | -         |   |                   |   | 621,920   |                       |   |   | 29,509       |   |   |               | -          |   |   |   | 651,429 |   |
| Intangible Assets, net                             |   |                     | -         |   |                   |   | 131,324   |                       |   |   | 19,757       |   |   |               | -          |   |   |   | 151,081 |   |
| Investment in Subsidiaries                         |   |                     | 1,768,436 |   |                   |   | 4         |                       |   |   | 50           |   |   |               | (1,768,490 | ) |   |   | - |   |
| Other                                              |   |                     | 7,332     |   |                   |   | 4,706     |                       |   |   | 3,606        |   |   |               | -          |   |   |   | 15,644 |   |
|                                               |   | $                        | 2,338,363 |   |                   | $      | 2,570,522 |                       |   | $      | 213,933      |   |   | $                  | (2,325,105 | ) |   | $ | 2,797,713 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| LIABILITIES AND STOCKHOLDERS’ EQUITY         |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Current Maturities of Long-term Debt               |   | $                        | 3,447     |   |                   | $      | 10,770    |                       |   | $      | -            |   |   | $                  | -          |   |   | $ | 14,217 |   |
| Accounts Payable                                   |   |                     | 48,409    |   |                   |   | 584,585   |                       |   |   | 30,308       |   |   |               | (65,643    | ) |   |   | 597,659 |   |
| Billings in Excess of Costs and Estimated Earnings |   |                     | 14,832    |   |                   |   | 167,121   |                       |   |   | 53,920       |   |   |               | -          |   |   |   | 235,873 |   |
| Accrued Expenses                                   |   |                     | 20,143    |   |                   |   | 51,620    |                       |   |   | 26,597       |   |   |               | (4,516     | ) |   |   | 93,844 |   |
| Total Current Liabilities                          |   |                     | 86,831    |   |                   |   | 814,096   |                       |   |   | 110,825      |   |   |               | (70,159    | ) |   |   | 941,593 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Long-term Debt, less current maturities            |   |                     | 319,761   |   |                   |   | 88,418    |                       |   |   | -            |   |   |               | -          |   |   |   | 408,179 |   |
| Deferred Income Taxes                              |   |                     | 78,233    |   |                   |   | 483       |                       |   |   | -            |   |   |               | -          |   |   |   | 78,716 |   |
| Other Long-term Liabilities                        |   |                     | 37,503    |   |                   |   | 8,122     |                       |   |   | -            |   |   |               | -          |   |   |   | 45,625 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Contingencies and Commitments                      |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Intercompany Notes and Advances Payable            |   |                     | 492,435   |   |                   |   | 11,832    |                       |   |   | (17,811      | )      |   |               | (486,456   | ) |   |   | - |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Stockholders’ Equity                         |   |                     | 1,323,600 |   |                   |   | 1,647,571 |                       |   |   | 120,919      |   |   |               | (1,768,490 | ) |   |   | 1,323,600 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
|                                               |   | $                        | 2,338,363 |   |                   | $      | 2,570,522 |                       |   | $      | 213,933      |   |   | $                  | (2,325,105 | ) |   | $ | 2,797,713 |   |

----

Index

|                                               |   | Tutor Perini Corporation |      |   | Guarantor Subsidiaries |   |      | Non-Guarantor Subsidiaries |   |   | Eliminations |   |   | Total Consolidated |       |
|----------------------------------------------------|--------|--------------------------|-----------|--------|------------------------|--------|-----------|----------------------------|--------|--------|--------------|--------|--------|--------------------|------------|
| ASSETS                                             |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |
| Cash and Cash Equivalents                          |   | $                        | 222,156   |   |                   | $      | 220,086   |                       |   | $      | 29,136       |   |   | $                  | -          |   |   | $ | 471,378 |   |
| Restricted Cash                                    |   |                     | 23,550    |   |                   |   | -         |                       |   |   | -            |   |   |               | -          |   |   |   | 23,550 |   |
| Accounts Receivable                                |   |                     | 116,718   |   |                   |   | 802,059   |                       |   |   | 643          |   |   |               | (38,806    | ) |   |   | 880,614 |   |
| Costs and Estimated Earnings in Excess of Billings |   |                     | 83,337    |   |                   |   | 55,960    |                       |   |   | 152          |   |   |               | -          |   |   |   | 139,449 |   |
| Deferred Income Taxes                              |   |                     | 3,515     |   |                   |   | 222       |                       |   |   | -            |   |   |               | -          |   |   |   | 3,737 |   |
| Other Current Assets                               |   |                     | 9,833     |   |                   |   | 22,784    |                       |   |   | 9,993        |   |   |               | (296       | ) |   |   | 42,314 |   |
| Total Current Assets                               |   |                     | 459,109   |   |                   |   | 1,101,111 |                       |   |   | 39,924       |   |   |               | (39,102    | ) |   |   | 1,561,042 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Long-term Investments                              |   |                     | 88,129    |   |                   |   | -         |                       |   |   | -            |   |   |               | -          |   |   |   | 88,129 |   |
| Property and Equipment, net                        |   |                     | 44,065    |   |                   |   | 312,965   |                       |   |   | 5,407        |   |   |               | -          |   |   |   | 362,437 |   |
| Intercompany Notes and Receivables                 |   |                     | (4,331    | )      |                   |   | 565,701   |                       |   |   | (5,196       | )      |   |               | (556,174   | ) |   |   | - |   |
| Other Assets:                                      |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Goodwill                                           |   |                     | -         |   |                   |   | 621,920   |                       |   |   | -            |   |   |               | -          |   |   |   | 621,920 |   |
| Intangible Assets, net                             |   |                     | -         |   |                   |   | 132,551   |                       |   |   | -            |   |   |               | -          |   |   |   | 132,551 |   |
| Investment in Subsidiaries                         |   |                     | 1,696,321 |   |                   |   | -         |                       |   |   | -            |   |   |               | (1,696,321 | ) |   |   | - |   |
| Other                                              |   |                     | 8,015     |   |                   |   | 4,751     |                       |   |   | 375          |   |   |               | -          |   |   |   | 13,141 |   |
|                                               |   | $                        | 2,291,308 |   |                   | $      | 2,738,999 |                       |   | $      | 40,510       |   |   | $                  | (2,291,597 | ) |   | $ | 2,779,220 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| LIABILITIES AND STOCKHOLDERS’ EQUITY         |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Current Maturities of Long-term Debt               |   | $                        | 6,198     |   |                   | $      | 15,136    |                       |   | $      | -            |   |   | $                  | -          |   |   | $ | 21,334 |   |
| Accounts Payable                                   |   |                     | 48,139    |   |                   |   | 643,462   |                       |   |   | 747          |   |   |               | (38,806    | ) |   |   | 653,542 |   |
| Billings in Excess of Costs and Estimated Earnings |   |                     | 20,424    |   |                   |   | 179,293   |                       |   |   | 33           |   |   |               | -          |   |   |   | 199,750 |   |
| Accrued Expenses                                   |   |                     | 17,880    |   |                   |   | 60,267    |                       |   |   | 15,637       |   |   |               | (296       | ) |   |   | 93,488 |   |
| Total Current Liabilities                          |   |                     | 92,641    |   |                   |   | 898,158   |                       |   |   | 16,417       |   |   |               | (39,102    | ) |   |   | 968,114 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Long-term Debt, less current maturities            |   |                     | 316,113   |   |                   |   | 58,237    |                       |   |   | -            |   |   |               | -          |   |   |   | 374,350 |   |
| Deferred Income Taxes                              |   |                     | 78,525    |   |                   |   | 557       |                       |   |   | -            |   |   |               | -          |   |   |   | 79,082 |   |
| Other Long-term Liabilities                        |   |                     | 36,121    |   |                   |   | 8,559     |                       |   |   | -            |   |   |               | -          |   |   |   | 44,680 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Contingencies and Commitments                      |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Intercompany Notes and Advances Payable            |   |                     | 454,914   |   |                   |   | 86,188    |                       |   |   | 15,072       |   |   |               | (556,174   | ) |   |   | - |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
| Stockholders’ Equity                         |   |                     | 1,312,994 |   |                   |   | 1,687,300 |                       |   |   | 9,021        |   |   |               | (1,696,321 | ) |   |   | 1,312,994 |   |
|                                               |   |                     |      |   |                   |   |      |                       |   |   |         |   |   |               |       |   |   |   |   |   |
|                                               |   | $                        | 2,291,308 |   |                   | $      | 2,738,999 |                       |   | $      | 40,510       |   |   | $                  | (2,291,597 | ) |   | $ | 2,779,220 |   |

----

Index

|                                       |   | Tutor Perini Corporation |   |   | Guarantor Subsidiaries |   |    | Non-Guarantor Subsidiaries |   |   | Eliminations |   |   | Total Consolidated |    |
|--------------------------------------------|--------|--------------------------|--------|--------|------------------------|--------|---------|----------------------------|--------|--------|--------------|--------|--------|--------------------|---------|
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |
| Revenues                                   |   | $                        | 85,358 |   |                   | $      | 477,129 |                       |   | $      | 69,365       |   |   | $                  | (16,563 | ) |   | $ | 615,289 |   |
| Cost of Operations                         |   |                     | 70,916 |   |                   |   | 438,274 |                       |   |   | 60,199       |   |   |               | (16,563 | ) |   |   | 552,826 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| Gross Profit                               |   |                     | 14,442 |   |                   |   | 38,855  |                       |   |   | 9,166        |   |   |               | -       |   |   |   | 62,463 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| General and Administrative Expenses        |   |                     | 15,317 |   |                   |   | 23,618  |                       |   |   | 5,015        |   |   |               | -       |   |   |   | 43,950 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| INCOME (LOSS) FROM CONSTRUCTION OPERATIONS |   |                     | (875   | )      |                   |   | 15,237  |                       |   |   | 4,151        |   |   |               | -       |   |   |   | 18,513 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| Equity in Earnings of Subsidiaries         |   |                     | 11,046 |   |                   |   | -       |                       |   |   | -            |   |   |               | (11,046 | ) |   |   | - |   |
| Other Income (Expense), net                |   |                     | 1,026  |   |                   |   | (1,493  | )                          |   |   | 20           |   |   |               | -       |   |   |   | (447 | ) |
| Interest Expense                           |   |                     | (6,636 | )      |                   |   | (519    | )                          |   |   | -            |   |   |               | -       |   |   |   | (7,155 | ) |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| Income before Income Taxes                 |   |                     | 4,561  |   |                   |   | 13,225  |                       |   |   | 4,171        |   |   |               | (11,046 | ) |   |   | 10,911 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| (Provision) Credit for Income Taxes   |   |                     | 2,368  |   |                   |   | (4,827  | )                          |   |   | (1,523       | )      |   |               | -       |   |   |   | (3,982 | ) |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| NET INCOME                                 |   | $                        | 6,929  |   |                   | $      | 8,398   |                       |   | $      | 2,648        |   |   | $                  | (11,046 | ) |   | $ | 6,929 |   |

|                                       |   | Tutor Perini Corporation |   |   | Guarantor Subsidiaries |   |    | Non-Guarantor Subsidiaries |   |   | Eliminations |   |   | Total Consolidated |    |
|--------------------------------------------|--------|--------------------------|--------|--------|------------------------|--------|---------|----------------------------|--------|--------|--------------|--------|--------|--------------------|---------|
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |
| Revenues                                   |   | $                        | 88,521 |   |                   | $      | 817,637 |                       |   | $      | 6            |   |   | $                  | (41,089 | ) |   | $ | 865,075 |   |
| Cost of Operations                         |   |                     | 76,130 |   |                   |   | 757,260 |                       |   |   | (3,359       | )      |   |               | (41,089 | ) |   |   | 788,942 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| Gross Profit                               |   |                     | 12,391 |   |                   |   | 60,377  |                       |   |   | 3,365        |   |   |               | -       |   |   |   | 76,133 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| General and Administrative Expenses        |   |                     | 13,424 |   |                   |   | 28,327  |                       |   |   | 225          |   |   |               | -       |   |   |   | 41,976 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| INCOME (LOSS) FROM CONSTRUCTION OPERATIONS |   |                     | (1,033 | )      |                   |   | 32,050  |                       |   |   | 3,140        |   |   |               | -       |   |   |   | 34,157 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| Equity in Earnings of Subsidiaries         |   |                     | 22,214 |   |                   |   | -       |                       |   |   | -            |   |   |               | (22,214 | ) |   |   | - |   |
| Other Income (Expense), net                |   |                     | (149   | )      |                   |   | 494     |                       |   |   | -            |   |   |               | -       |   |   |   | 345 |   |
| Interest Expense                           |   |                     | (820   | )      |                   |   | (577    | )                          |   |   | (124         | )      |   |               | -       |   |   |   | (1,521 | ) |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| Income before Income Taxes            |   |                     | 20,212 |   |                   |   | 31,967  |                       |   |   | 3,016        |   |   |               | (22,214 | ) |   |   | 32,981 |   |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| (Provision) Credit for Income Taxes        |   |                     | 721    |   |                   |   | (11,668 | )                          |   |   | (1,101       | )      |   |               | -       |   |   |   | (12,048 | ) |
|                                       |   |                     |   |   |                   |   |    |                       |   |   |         |   |   |               |    |   |   |   |   |   |
| NET INCOME                                 |   | $                        | 20,933 |   |                   | $      | 20,299  |                       |   | $      | 1,915        |   |   | $                  | (22,214 | ) |   | $ | 20,933 |   |

----

Index

|                                                                       |   | Tutor Perini Corporation |    |   | Guarantor Subsidiaries |   |    | Non- Guarantor Subsidiaries |   |   | Eliminations |   |   | Total Consolidated |    |
|----------------------------------------------------------------------------|--------|--------------------------|---------|--------|------------------------|--------|---------|-----------------------------|--------|--------|--------------|--------|--------|--------------------|---------|
| Cash Flows from Operating Activities:                                      |   |                     |    |   |                   |   |    |                        |   |   |         |   |   |               |    |
| Net income                                                                 |   | $                        | 6,929   |   |                   | $      | 8,398   |                        |   | $      | 2,648        |   |   | $                  | (11,046 | )  |   | $ | 6,929 |   |
| Adjustments to reconcile net income to net cash from operating activities: |   |                     |    |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Depreciation and amortization                                              |   |                     | 1,503   |   |                   |   | 5,792   |                        |   |   | 748          |   |   |               | -       |   |   |   | 8,043 |   |
| Equity in earnings of subsidiaries                                         |   |                     | (11,046 | )      |                   |   | -       |                        |   |   | -            |   |   |               | 11,046  |   |   |   | - |   |
| Stock-based compensation expense                                           |   |                     | 3,615   |   |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | 3,615 |   |
| Excess income tax benefit from stock-based compensation                    |   |                     | (18     | )      |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | (18 | ) |
| Deferred income taxes                                                      |   |                     | (293    | )      |                   |   | (118    | )                           |   |   | -            |   |   |               | -       |   |   |   | (411 | ) |
| Loss (gain) on sale of equipment                                           |   |                     | -       |   |                   |   | 598     |                        |   |   | (2           | )      |   |               | -       |   |   |   | 596 |   |
| Other long-term liabilities                                                |   |                     | 182     |   |                   |   | (425    | )                           |   |   | -            |   |   |               | -       |   |   |   | (243 | ) |
| Other non-cash items                                                       |   |                     | 44      |   |                   |   | 20      |                        |   |   | -            |   |   |               | -       |   |   |   | 64 |   |
| Changes in other components of working capital                             |   |                     | (7,647  | )      |                   |   | (65,022 | )                           |   |   | 6,440        |   |   |               | -       |   |   |   | (66,229 | ) |
| NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                           |   | $                        | (6,731  | )      |                   | $      | (50,757 | )                           |   | $      | 9,834        |   |   | $                  | -       |   |   | $ | (47,654 | ) |
|                                                                       |   |                     |    |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Cash Flows from Investing Activities:                                      |   |                     |    |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Acquisition of Fisk Electric, net of cash balance acquired                 |   |                     | (70,620 | )      |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | (70,620 | ) |
| Business acquisition related payments                                      |   |                     | (3,000  | )      |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | (3,000 | ) |
| Acquisition of property and equipment                                      |   |                     | (1,097  | )      |                   |   | (7,373  | )                           |   |   | (462         | )      |   |               | -       |   |   |   | (8,932 | ) |
| Proceeds from sale of property and equipment                               |   |                     | -       |   |                   |   | 891     |                        |   |   | 2            |   |   |               | -       |   |   |   | 893 |   |
| Change in restricted cash                                                  |   |                     | (8      | )      |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | (8 | ) |
| NET CASH PROVIDED (USED) BY INVESTING ACTIVITIES                           |   | $                        | (74,725 | )      |                   | $      | (6,482  | )                           |   | $      | (460         | )      |   | $                  | -       |   |   | $ | (81,667 | ) |
|                                                                       |   |                     |    |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Cash Flows from Financing Activities:                                      |   |                     |    |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Proceeds from long-term debt                                               |   |                     | 7,276   |   |                   |   | 50,899  |                        |   |   | -            |   |   |               | -       |   |   |   | 58,175 |   |
| Repayment of long-term debt                                                |   |                     | (6,431  | )      |                   |   | (26,688 | )                           |   |   | -            |   |   |               | -       |   |   |   | (33,119 | ) |
| Excess income tax benefit from stock-based compensation                    |   |                     | 18      |   |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | 18 |   |
| Debt issuance costs                                                        |   |                     | (25     | )      |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | (25 | ) |
| Increase (decrease) in intercompany advances                               |   |                     | 33,786  |   |                   |   | (35,211 | )                           |   |   | 1,425        |   |   |               | -       |   |   |   | - |   |
| NET CASH PROVIDED (USED) BY FINANCING ACTIVITIES                           |   | $                        | 34,624  |   |                   | $      | (11,000 | )                           |   | $      | 1,425        |   |   | $                  | -       |   |   | $ | 25,049 |   |
|                                                                       |   |                     |    |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Net Increase (Decrease) in Cash and Cash Equivalents                       |   |                     | (46,832 | )      |                   |   | (68,239 | )                           |   |   | 10,799       |   |   |               | -       |   |   |   | (104,272 | ) |
| Cash and Cash Equivalents at Beginning of Year                             |   |                     | 222,156 |   |                   |   | 220,086 |                        |   |   | 29,136       |   |   |               | -       |   |   |   | 471,378 |   |
| Cash and Cash Equivalents at End of Period                                 |   | $                        | 175,324 |   |                   | $      | 151,847 |                        |   | $      | 39,935       |   |   | $                  | -       |   |   | $ | 367,106 |   |

----

Index

|                                                                       |   | TutorPeriniCorporation |     |   | Guarantor Subsidiaries |   |    | Non- Guarantor Subsidiaries |   |   | Eliminations |   |   | Total Consolidated |    |
|----------------------------------------------------------------------------|--------|------------------------|----------|--------|------------------------|--------|---------|-----------------------------|--------|--------|--------------|--------|--------|--------------------|---------|
| Cash Flows from Operating Activities:                                      |   |                   |     |   |                   |   |    |                        |   |   |         |   |   |               |    |
| Net income                                                                 |   | $                      | 20,933   |   |                   | $      | 20,299  |                        |   | $      | 1,915        |   |   | $                  | (22,214 | ) |   | $ | 20,933 |   |
| Adjustments to reconcile net income to net cash from operating activities: |   |                   |     |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Depreciation and amortization                                              |   |                   | 1,322    |   |                   |   | 6,637   |                        |   |   | 71           |   |   |               | -       |   |   |   | 8,030 |   |
| Equity in earnings of subsidiaries                                         |   |                   | (22,214  | )      |                   |   | -       |                        |   |   | -            |   |   |               | 22,214  |   |   |   | - |   |
| Stock-based compensation expense                                           |   |                   | 3,909    |   |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | 3,909 |   |
| Adjustment of investments to fair value                                    |   |                   | (57      | )      |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | (57 | ) |
| Deferred income taxes                                                      |   |                   | (1,114   | )      |                   |   | (23     | )                           |   |   | -            |   |   |               | -       |   |   |   | (1,137 | ) |
| Other long-term liabilities                                                |   |                   | (329     | )      |                   |   | (3,760  | )                           |   |   | -            |   |   |               | -       |   |   |   | (4,089 | ) |
| Changes in other components of working capital                             |   |                   | 254      |   |                   |   | (82,363 | )                           |   |   | (5,771       | )      |   |               | -       |   |   |   | (87,880 | ) |
| NET CASH PROVIDED (USED) BY OPERATING ACTIVITIES                           |   | $                      | 2,704    |   |                   | $      | (59,210 | )                           |   | $      | (3,785       | )      |   | $                  | -       |   |   | $ | (60,291 | ) |
|                                                                       |   |                   |     |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Cash Flows from Investing Activities:                                      |   |                   |     |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Acquisition of property and equipment                                      |   |                   | (230     | )      |                   |   | (3,787  | )                           |   |   | (171         | )      |   |               | -       |   |   |   | (4,188 | ) |
| Proceeds from sale of property and equipment                               |   |                   | 5        |   |                   |   | 568     |                        |   |   | -            |   |   |               | -       |   |   |   | 573 |   |
| Proceeds from sale of available-for-sale securities                        |   |                   | 375      |   |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | 375 |   |
| Increase in Restricted Cash                                           |   |                   | (23,523  | )      |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | (23,523 | ) |
| Investment in other activities                                             |   |                   | -        |   |                   |   | 285     |                        |   |   | -            |   |   |               | -       |   |   |   | 285 |   |
| NET CASH PROVIDED (USED) BY INVESTING ACTIVITIES                           |   | $                      | (23,373  | )      |                   | $      | (2,934  | )                           |   | $      | (171         | )      |   | $                  | -       |   |   | $ | (26,478 | ) |
|                                                                       |   |                   |     |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Cash Flows from Financing Activities:                                      |   |                   |     |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Proceeds from long-term debt                                               |   |                   | 2,564    |   |                   |   | 2,100   |                        |   |   | -            |   |   |               | -       |   |   |   | 4,664 |   |
| Repayment of long-term debt                                                |   |                   | (3,798   | )      |                   |   | (4,034  | )                           |   |   | (78          | )      |   |               | -       |   |   |   | (7,910 | ) |
| Issuance of common stock and effect of cashless exercise                   |   |                   | (203     | )      |                   |   | -       |                        |   |   | -            |   |   |               | -       |   |   |   | (203 | ) |
| Debt issuance costs                                                        |   |                   | (1,170   | )      |                   |   | -       |                        |   |   | 6            |   |   |               | -       |   |   |   | (1,164 | ) |
| Increase (decrease) in intercompany advances                               |   |                   | (106,671 | )      |                   |   | 105,283 |                        |   |   | 1,388        |   |   |               | -       |   |   |   | - |   |
| NET CASH PROVIDED (USED) BY FINANCING ACTIVITIES                           |   | $                      | (109,278 | )      |                   | $      | 103,349 |                        |   | $      | 1,316        |   |   | $                  | -       |   |   | $ | (4,613 | ) |
|                                                                       |   |                   |     |   |                   |   |    |                        |   |   |         |   |   |               |    |   |   |   |   |   |
| Net Increase (Decrease) in Cash and Cash Equivalents                       |   |                   | (129,947 | )      |                   |   | 41,205  |                        |   |   | (2,640       | )      |   |               | -       |   |   |   | (91,382 | ) |
| Cash and Cash Equivalents at Beginning of Year                             |   |                   | 266,171  |   |                   |   | 58,388  |                        |   |   | 23,750       |   |   |               | -       |   |   |   | 348,309 |   |
| Cash and Cash Equivalents at End of Period                                 |   | $                      | 136,224  |   |                   | $      | 99,593  |                        |   | $      | 21,110       |   |   | $                  | -       |   |   | $ | 256,927 |   |

----

Index

----

Index

Item 2. 

----

Index

----

Index

| (dollars in millions)          |   | Backlog at December 31, 2010 |    |   | New Business Awarded (1) |   |   | Revenues Recognized |   |   | Backlog at March 31, 2011 |   |
|--------------------------------|--------|----------------------------------------|---------|--------|-------------------------------|--------|--------|--------------------------|--------|--------|-------------------------------------|--------|
| Building                       |   | $                                      | 2,663.3 |   |                          | $      | 305.3  |                     |   | $      | (440.4                              | )      |   | $ | 2,528.2 |   |
| Civil                          |   |                                   | 1,360.1 |   |                          |   | 143.2  |                     |   |   | (128.8                              | )      |   |   | 1,374.5 |   |
| Management  Services |   |                                   | 260.9   |   |                          |   | 113.8  |                     |   |   | (46.1                               | )      |   |   | 328.6 |   |
| Total                          |   | $                                      | 4,284.3 |   |                          | $      | 562.3  |                     |   | $      | (615.3                              | )      |   | $ | 4,231.3 |   |

|   | (1) | New business awarded consists of the original contract price of projects added to our backlog plus or minus subsequent changes to the estimated total contract price of    existing changes, plus the value of uncompleted contract work of businesses acquired. |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|                  |   | Revenues for the                  |   |   |   |   |   |          |   |
|-----------------------|--------|-----------------------------------|--------|--------|--------|--------|--------|---------------|--------|
|                  |   | Three Months Ended March 31, |   |   |   |   |   |          |   |
| (dollars in millions) |   | 2011                              |   |   | 2010   |   |   | $ Change |   |   | % Change |   |
| Building              |   | $                                 | 440.4  |   |   | $      | 686.3  |          |   | $ | (245.9 | ) |   |   | (35.8 | )% |
| Civil                 |   |                              | 128.8  |   |   |   | 124.7  |          |   |   | 4.1 |   |   |   | 3.3 | % |
| Management Services   |   |                              | 46.1   |   |   |   | 54.1   |          |   |   | (8.0 | ) |   |   | (14.8 | )% |
| Total                 |   | $                                 | 615.3  |   |   | $      | 865.1  |          |   | $ | (249.8 | ) |   |   | (28.9 | )% |

----

Index

|                  |   | Income from Construction          |   |   |   |   |   |     |   |
|-----------------------|--------|-----------------------------------|--------|--------|--------|--------|--------|----------|--------|
|                  |   | Operations for the                |   |   |   |   |   |     |   |
|                  |   | Three Months Ended March 31, |   |   |   |   |   |     |   |
| (dollars in millions) |   | 2011                              |   |   | 2010   |   |   | $ Change |   |   | % Change |   |
| Building              |   | $                                 | 13.1   |   |   | $      | 32.3   |     |   | $ | (19.2 | ) |   |   | (59.4 | )% |
| Civil                 |   |                              | 12.1   |   |   |   | 8.3    |     |   |   | 3.8 |   |   |   | 45.8 | % |
| Management Services   |   |                              | 2.7    |   |   |   | 3.1    |     |   |   | (0.4 | ) |   |   | (12.9 | )% |
| Corporate             |   |                              | (9.4   | )      |   |   | (9.5   | )        |   |   | 0.1 |   |   |   | (1.1 | )% |
| Total                 |   | $                                 | 18.5   |   |   | $      | 34.2   |     |   | $ | (15.7 | ) |   |   | (45.9 | )% |

| (dollars in millions)       |   | March 31, 2011 |   |   | March 31,2010 |   |   | $ Change |   |   | % Change |   |
|-----------------------------|--------|---------------------|--------|--------|---------------|--------|--------|---------------|--------|--------|---------------|--------|
| Three months ended          |   |                |   |   |          |   |   |          |   |   |          |   |
| Other Income (Expense), net |   | $                   | (0.4   | )      |          |   | 0.3    |          |   |   | (0.7     | )      |   |   | (233.3 | )% |
| Interest Expense            |   |                | (7.2   | )      |          |   | (1.5   | )             |   |   | 5.7           |   |   |   | 380.0 | % |
| Provision for Income Taxes  |   |                | (4.0   | )      |          |   | (12.0  | )             |   |   | (8.0          | )      |   |   | (66.7 | )% |

----

Index

|                            |   | Three Months Ended March 31, |   |
|---------------------------------|--------|-----------------------------------|--------|
| (dollars in millions)           |   | 2011                              |   |   | 2010 |   |
| Cash flows from:                |   |                              |   |   |   |   |
| Operating activities            |   | $                                 | (47.7  | ) |   | $ | (60.3 | ) |
| Investing activities            |   |                              | (81.7  | ) |   |   | (26.5 | ) |
| Financing activities            |   |                              | 25.1   |   |   |   | (4.6 | ) |
| Net (decrease) increase in cash |   |                              | (104.3 | ) |   |   | (91.4 | ) |
| Cash at beginning of year       |   |                              | 471.4  |   |   |   | 348.3 |   |
| Cash at end of period           |   | $                                 | 367.1  |   |   | $ | 256.9 |   |

----

Index

|   | · | our ability to win new contracts and convert backlog into revenue; |
|--------|--------|--------------------------------------------------------------------|

|   | · | our ability to successfully and timely complete construction projects; |
|--------|--------|------------------------------------------------------------------------|

|   | · | the potential delay, suspension, termination or reduction in scope of a construction project; |
|--------|--------|-----------------------------------------------------------------------------------------------|

|   | · | the continuing validity of the underlying assumptions and estimates of total forecasted project revenues, costs and profits and project schedules; |
|--------|--------|----------------------------------------------------------------------------------------------------------------------------------------------------|

|   | · | the outcomes of pending or future litigation, arbitration or other dispute resolution proceedings; |
|--------|--------|----------------------------------------------------------------------------------------------------|

|   | · | the availability of borrowed funds on terms acceptable to us; |
|--------|--------|---------------------------------------------------------------|

|   | · | the ability to retain certain members of management; |
|--------|--------|------------------------------------------------------|

|   | · | the ability to obtain surety bonds to secure our performance under certain construction contracts; |
|--------|--------|----------------------------------------------------------------------------------------------------|

|   | · | possible labor disputes or work stoppages within the construction industry; |
|--------|--------|-----------------------------------------------------------------------------|

|   | · | changes in federal and state appropriations for infrastructure projects; |
|--------|--------|--------------------------------------------------------------------------|

|   | · | possible changes or developments in international or domestic political, social, economic, business, industry, market and regulatory conditions or circumstances; |
|--------|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | · | actions taken or not taken by third parties including our customers, suppliers, business partners, and competitors and legislative, regulatory, judicial and other governmental authorities and officials; and |
|--------|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | · | other risks and uncertainties discussed under the heading “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2010 filed with the Securities and Exchange Commission on March 4, 2011. |
|--------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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Index

Quantitative and Qualitative 

Controls and Procedures

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Index

Legal Proceedings

Risk Factors

Unregistered Sales of Equity Securities and Use of Proceeds

Defaults Upon Senior Securities

Removed and Reserved

)

. Other Information

Exhibits

| Exhibit 3.1 | Restated Articles of Organization (incorporated by reference to Exhibit 4 to Form S-2 (File No. 33-28401) filed on April 28, 1989).                                                           |
|-------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|        |                                                                                                                                                                                          |
| Exhibit 3.2 | Articles of Amendment to the Restated Articles of Organization of Perini Corporation (incorporated by reference to Exhibit 3.2 to Form S-1 (File No. 333-111338) filed on December 19, 2003). |
|        |                                                                                                                                                                                          |
| Exhibit 3.3 | Articles of Amendment to the Restated Articles of Organization of Perini Corporation (incorporated by reference to Exhibit 3.1 to Form 8-K filed on April 12, 2000).                          |
|        |                                                                                                                                                                                          |
| Exhibit 3.4 | Articles of Amendment to the Restated Articles of Organization of Perini Corporation (incorporated by reference to Exhibit 3.1 to Form 8-K filed on September 11, 2008).                      |

----

Index

| Exhibit 3.5   | Articles of Amendment to the Restated Articles of Organization of Perini Corporation (incorporated by reference to Exhibit 3.5 to Form 10-Q filed on August 10, 2009).                                                                                              |
|---------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|          |                                                                                                                                                                                                                                                                |
| Exhibit 3.6   | Second Amended and Restated By-laws of Tutor Perini Corporation (incorporated by reference to Exhibit 3.1 to Form 8-K filed on November 24, 2009).                                                                                                                  |
|          |                                                                                                                                                                                                                                                                |
| Exhibit 4.1   | Shareholders Agreement, dated as of April 2, 2008, by and among Tutor Perini Corporation, Ronald N. Tutor and the shareholders of Tutor-Saliba Corporation signatory thereto (incorporated by reference to Exhibit 4.1 to Form 8-K filed on April 7, 2008).         |
|          |                                                                                                                                                                                                                                                                |
| Exhibit 4.2   | Amendment No. 1 to the Shareholders Agreement, dated as of September 17, 2010, by and between Tutor Perini Corporation and Ronald N. Tutor, as shareholder representative (incorporated by reference to Exhibit 4.1 to Form 8-K filed on September 20, 2010).       |
|          |                                                                                                                                                                                                                                                                |
| Exhibit 4.3   | Indenture, dated October 20, 2010, by and among Tutor Perini Corporation, certain subsidiary guarantors named therein and Wilmington Trust FSB, as trustee (incorporated by reference to Exhibit 4.1 to Form 8-K filed on October 21, 2010).                        |
|          |                                                                                                                                                                                                                                                                |
| Exhibit 4.4   | Registration Rights Agreement dated October 20, 2010, by and among Tutor Perini Corporation, certain subsidiary guarantors named therein and the initial purchasers named therein (incorporated by reference to Exhibit 4.2 to Form 8-K filed on October 21, 2010). |
|          |                                                                                                                                                                                                                                                                |
| Exhibit 10.1  | Employment Agreement dated as of March 21, 2011, by and between Tutor Perini corporation and James A. Frost (incorporated by reference to Exhibit 10.1 to Form 8-K filed on March 24, 2011).                                                                        |
|          |                                                                                                                                                                                                                                                                |
| Exhibit 10.2  | Fourth Amended and Restated Credit Agreement, dated as of May 4, 2011, among Tutor Perini Corporation, the subsidiaries of Tutor Perini named therein, and Bank of America, N.A., and the other lenders that are parties thereto – filed herewith.       |
|          |                                                                                                                                                                                                                                                                |
| Exhibit 31.1  | Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 – filed herewith.                                                                                                                                      |
|          |                                                                                                                                                                                                                                                                |
| Exhibit 31.2  | Certification of Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 – filed herewith.                                                                                                                                      |
|          |                                                                                                                                                                                                                                                                |
| *Exhibit 32.1 | Certification of Principal Executive Officer Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 – filed herewith.                                                                                       |
|          |                                                                                                                                                                                                                                                                |
| *Exhibit 32.2 | Certification of Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, As Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 – filed herewith.                                                                                       |

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Index

SIGNATURES

|                         | Tutor Perini Corporation                                              |
|------------------------------|-----------------------------------------------------------------------|
|                         | Registrant                                                            |
|                         |                                                                  |
|                         |                                                                  |
| Date:  May 5, 2011 | /s/Kenneth R. Burk                                                    |
|                         | Kenneth R. Burk, Executive Vice President and Chief Financial Officer |
|                         | Duly Authorized Officer and Principal Financial Officer               |

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