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

|   | ACT      OF 1934 |
|--------|------------------|

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

|   | EXCHANGE      ACT OF 1934 |
|--------|---------------------------|

| MASSACHUSETTS                                                           | 04-1717070                                    |
|-------------------------------------------------------------------------|-----------------------------------------------|
| (State      or other jurisdiction ofincorporation      or organization) | (I.R.S.      EmployerIdentification      No.) |

| Large      accelerated filer ___ | Accelerated      filer     X          | Non-Accelerated      filer  ___ | Smaller      reportingcompany  __ |
|----------------------------------|--------------------------------------------------------------------------|-------------------------------------------|---------------------------------------------|

----

|            |                        |                                                                                                                   | Page Number |
|-----------------|-----------------------------|------------------------------------------------------------------------------------------------------------------------|-------------|
| Part      I. -  | Financial      Information: |                                                                                                                   |
|            |                        |                                                                                                                   |        |
|            | Item      1.                | Financial      Statements (Unaudited)                                                                                  |        |
|            |                        |                                                                                                                   |        |
|            |                        | Consolidated      Condensed Balance Sheets –March      31, 2010 and December 31, 2009                            | 3           |
|            |                        |                                                                                                                   |        |
|            |                        | Consolidated      Condensed Statements of Income –Three      Months ended March 31, 2010 and 2009                | 4           |
|            |                        |                                                                                                                   |        |
|            |                        | Consolidated      Condensed Statement of Stockholders’ Equity –Three      Months ended March 31, 2010      | 5           |
|            |                        |                                                                                                                   |        |
|            |                        | Consolidated      Condensed Statements of Cash Flows  –Three      Months ended March 31, 2010 and 2009 | 6           |
|            |                        |                                                                                                                   |        |
|            |                        | Notes      to Consolidated Condensed Financial Statements                                                              | 7-19        |
|            |                        |                                                                                                                   |        |
|            | Item      2.                | Management's      Discussion and Analysis of Financial Condition and Results of      Operations                        | 20-25       |
|            |                        |                                                                                                                   |        |
|            | Item      3.                | Quantitative      and Qualitative Disclosures About Market Risk                                                        | 25          |
|            |                        |                                                                                                                   |        |
|            | Item      4.                | Controls      and Procedures                                                                                           | 25-26       |
|            |                        |                                                                                                                   |        |
| Part      II. - | Other      Information:     |                                                                                                                   |
|            |                        |                                                                                                                   |        |
|            | Item      1.                | Legal      Proceedings                                                                                                 | 26          |
|            |                        |                                                                                                                   |        |
|            | Item      1A.               | Risk      Factors                                                                                                      | 26          |
|            |                        |                                                                                                                   |        |
|            | Item      2.                | Unregistered      Sales of Equity Securities and Use of Proceeds                                                       | 26          |
|            |                        |                                                                                                                   |        |
|            | Item      3.                | Defaults      Upon Senior Securities                                                                                   | 26          |
|            |                        |                                                                                                                   |        |
|            | Item      4.                | [Removed      and Reserved]                                                                                            | 26          |
|            |                        |                                                                                                                   |        |
|            | Item      5.                | Other      Information                                                                                                 | 26          |
|            |                        |                                                                                                                   |        |
|            | Item      6.                | Exhibits                                                                                                               | 26-27       |
|            |                        |                                                                                                                   |        |
|            | Signatures                  | 28                                                                                                                     |
|            |                        |                                                                                                                   |
|            |                        |                                                                                                                   |
|            |                        |                                                                                                                   |

----

|                                                                             |   | MARCH      31, |      |   | DECEMBER      31, |   |
|----------------------------------------------------------------------------------|--------|----------------|-----------|--------|-------------------|--------|
|                                                                             |   | 2010           |      |   | 2009              |   |
| ASSETS                                                                           |   |           |      |   |              |   |
| Cash      and Cash Equivalents                                                   |   | $              | 256,927   |   |              | $      | 348,309 |   |
| Restricted      Cash                                                             |   |           | 23,523    |   |              |   | - |   |
| Accounts      Receivable, including retainage                                    |   |           | 1,115,997 |   |              |   | 1,088,386 |   |
| Costs      and Estimated Earnings in Excess of Billings                          |   |           | 134,825   |   |              |   | 145,678 |   |
| Deferred      Income Taxes                                                       |   |           | 1,393     |   |              |   | 1,370 |   |
| Other      Current Assets                                                        |   |           | 33,527    |   |              |   | 30,811 |   |
| Total Current      Assets                                                        |   |           | 1,566,192 |   |              |   | 1,614,554 |   |
|                                                                             |   |           |      |   |              |   |   |   |
| Long-term      Investments                                                       |   |           | 100,826   |   |              |   | 101,201 |   |
|                                                                             |   |           |      |   |              |   |   |   |
| Property      and Equipment, (less Accumulated Depreciation                      |   |           |      |   |              |   |   |   |
| of      $72,216 in 2010 and $67,256 in 2009)                                     |   |           | 351,398   |   |              |   | 348,821 |   |
|                                                                             |   |           |      |   |              |   |   |   |
| Other      Assets:                                                               |   |           |      |   |              |   |   |   |
| Goodwill                                                                         |   |           | 602,471   |   |              |   | 602,471 |   |
| Intangible      Assets, net                                                      |   |           | 132,089   |   |              |   | 134,327 |   |
| Other                                                                            |   |           | 20,209    |   |              |   | 19,280 |   |
|                                                                             |   | $              | 2,773,185 |   |              | $      | 2,820,654 |   |
|                                                                             |   |           |      |   |              |   |   |   |
| LIABILITIES AND STOCKHOLDERS’      EQUITY                                  |   |           |      |   |              |   |   |   |
| Current      Maturities of Long-term Debt                                        |   | $              | 29,879    |   |              | $      | 31,334 |   |
| Accounts      Payable, including retainage                                       |   |           | 911,184   |   |              |   | 990,551 |   |
| Billings      in Excess of Costs and Estimated Earnings                          |   |           | 209,323   |   |              |   | 187,714 |   |
| Accrued      Expenses                                                            |   |           | 91,832    |   |              |   | 101,837 |   |
| Total Current Liabilities                                                        |   |           | 1,242,218 |   |              |   | 1,311,436 |   |
|                                                                             |   |           |      |   |              |   |   |   |
| Long-term      Debt, less current maturities included above                      |   |           | 87,733    |   |              |   | 84,771 |   |
|                                                                             |   |           |      |   |              |   |   |   |
| Deferred      Income Taxes                                                       |   |           | 77,645    |   |              |   | 78,977 |   |
|                                                                             |   |           |      |   |              |   |   |   |
| Other      Long-term Liabilities                                                 |   |           | 52,896    |   |              |   | 57,044 |   |
|                                                                             |   |           |      |   |              |   |   |   |
| Contingencies      and Commitments                                               |   |           | -         |   |              |   | - |   |
|                                                                             |   |           |      |   |              |   |   |   |
| Stockholders’      Equity:                                                 |   |           |      |   |              |   |   |   |
| Common      Stock - $1 par value: 75,000,000 shares authorized              |   |           |      |   |              |   |   |   |
| Shares      issued and outstanding: 49,048,044 and 48,538,982,      respectively |   |           | 49,048    |   |              |   | 48,539 |   |
| Additional      Paid-in Capital                                                  |   |           | 1,015,757 |   |              |   | 1,012,983 |   |
| Retained      Earnings                                                           |   |           | 281,054   |   |              |   | 260,121 |   |
| Accumulated      Other Comprehensive Loss                                        |   |           | (33,166   | )      |              |   | (33,217 | ) |
| Total Stockholders'      Equity                                                  |   |           | 1,312,693 |   |              |   | 1,288,426 |   |
|                                                                             |   |           |      |   |              |   |   |   |
|                                                                             |   | $              | 2,773,185 |   |              | $      | 2,820,654 |   |

|   |  The      accompanying notes are an integral part of these consolidated condensed      financial statements. |
|--------|-------------------------------------------------------------------------------------------------------------------|

----

|                                                 |   | THREE      MONTHS ENDED |    |
|------------------------------------------------------|--------|-------------------------|---------|
|                                                 |   | MARCH      31,          |    |
|                                                 |   |                    |    |   |   |   |
|                                                 |   | 2010                    |    |   | 2009 |   |
|                                                 |   |                    |    |   |   |   |
| Revenues                                             |   | $                       | 865,075 |   |   | $ | 1,518,282 |   |
|                                                 |   |                    |    |   |   |   |   |   |
| Cost      of Operations                              |   |                    | 788,942 |   |   |   | 1,411,372 |   |
|                                                 |   |                    |    |   |   |   |   |   |
| Gross      Profit                                    |   |                    | 76,133  |   |   |   | 106,910 |   |
|                                                 |   |                    |    |   |   |   |   |   |
| General      and Administrative Expenses             |   |                    | 41,976  |   |   |   | 44,276 |   |
|                                                 |   |                    |    |   |   |   |   |   |
| INCOME      FROM CONSTRUCTION OPERATIONS             |   |                    | 34,157  |   |   |   | 62,634 |   |
|                                                 |   |                    |    |   |   |   |   |   |
| Other      Income, net                               |   |                    | 345     |   |   |   | 1,266 |   |
| Interest      Expense                                |   |                    | (1,521  | ) |   |   | (1,230 | ) |
|                                                 |   |                    |    |   |   |   |   |   |
| Income      before Income Taxes                      |   |                    | 32,981  |   |   |   | 62,670 |   |
|                                                 |   |                    |    |   |   |   |   |   |
| Provision      for Income Taxes                      |   |                    | (12,048 | ) |   |   | (23,689 | ) |
|                                                 |   |                    |    |   |   |   |   |   |
| NET      INCOME                                      |   | $                       | 20,933  |   |   | $ | 38,981 |   |
|                                                 |   |                    |    |   |   |   |   |   |
|                                                 |   |                    |    |   |   |   |   |   |
| BASIC      EARNINGS PER COMMON SHARE                 |   | $                       | 0.43    |   |   | $ | 0.80 |   |
|                                                 |   |                    |    |   |   |   |   |   |
| DILUTED      EARNINGS PER COMMON SHARE               |   | $                       | 0.42    |   |   | $ | 0.80 |   |
|                                                 |   |                    |    |   |   |   |   |   |
|                                                 |   |                    |    |   |   |   |   |   |
| WEIGHTED      AVERAGE COMMON SHARES OUTSTANDING:     |   |                    |    |   |   |   |   |   |
| BASIC                                                |   |                    | 49,025  |   |   |   | 48,514 |   |
| Effect of Dilutive Stock      Options and Restricted |   |                    |    |   |   |   |   |   |
| Stock Units      Outstanding                         |   |                    | 337     |   |   |   | 505 |   |
| DILUTED                                              |   |                    | 49,362  |    |   |   | 49,019 |   |

----

|                                        |   |    |                           |   |       |   |                           |     |   |                           | Accumulated   |   |                           |   |    |
|---------------------------------------------|--------|---------|--------------------------------|--------|------------|--------|--------------------------------|----------|--------|--------------------------------|---------------|--------|--------------------------------|--------|---------|
|                                        |   |    |                           |   | Additional |   |                           |     |   |                           | Other         |   |                           |   |    |
|                                        |   | Common  |                           |   | Paid-in    |   |                           | Retained |   |                           | Comprehensive |   |                           |   |    |
|                                        |   | Stock   |       |   | Capital    |   |       | Earnings |   |       | Loss          |   |       | Total  |    |
|                                        |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |
| Balance      - December 31, 2009            |   | $       | 48,539                         |   |       | $      | 1,012,983                      |     |   | $                              | 260,121       |   |                           | $      | (33,217 | ) |   | $ | 1,288,426 |   |
|                                        |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |   |   |   |   |   |
| Net      Income                             |   |    | -                              |   |       |   | -                              |     |   |                           | 20,933        |   |                           |   | -       |   |   |   | 20,933 |   |
|                                        |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |   |   |   |   |   |
| Other      comprehensive income:            |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |   |   |   |   |   |
| Foreign currency      translation           |   |    | -                              |   |       |   | -                              |     |   |                           | -             |   |                           |   | 51      |   |   |   | 51 |   |
| Total      comprehensive income             |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |   |   |   | 20,984 |   |
|                                        |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |   |   |   |   |   |
| Tax      effect of stock-based compensation |   |    | -                              |   |       |   | (423                           | )        |   |                           | -             |   |                           |   | -       |   |   |   | (423 | ) |
|                                        |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |   |   |   |   |   |
| Stock-based      compensation expense       |   |    | -                              |   |       |   | 3,909                          |     |   |                           | -             |   |                           |   | -       |   |   |   | 3,909 |   |
|                                        |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |   |   |   |   |   |
| Issuance      of Common Stock, net          |   |    | 509                            |   |       |   | (712                           | )        |   |                           | -             |   |                           |   | -       |   |   |   | (203 | ) |
|                                        |   |    |                           |   |       |   |                           |     |   |                           |          |   |                           |   |    |   |   |   |   |   |
| Balance      - March 31, 2010               |   |  $ |  49,048                   |   |       | $      | 1,015,757                      |     |   | $                              | 281,054       |   |                           | $      | (33,166 | ) |   | $ | 1,312,693 |   |

----

|                                                                            |   | THREE      MONTHS ENDED |    |
|---------------------------------------------------------------------------------|--------|-------------------------|---------|
|                                                                            |   | MARCH      31,          |    |
|                                                                            |   | 2010                    |    |   | 2009 |   |
| Cash      Flows from Operating Activities:                                      |   |                    |    |   |   |   |
| Net Income                                                                      |   | $                       | 20,933  |   |   | $ | 38,981 |   |
| Adjustments to reconcile Net      Income to net cash from operating activities: |   |                    |    |   |   |   |   |   |
|     Depreciation and      amortization                      |   |                    | 8,030   |   |   |   | 10,215 |   |
|     Stock-based compensation      expense                   |   |                    | 3,909   |   |   |   | 2,715 |   |
|     Adjustment of investments to fair      value            |   |                    | (57     | ) |   |   | 18 |   |
|     Deferred Income    Taxes                                |   |                    | (1,137  | ) |   |   | (779 | ) |
|     Loss on      sale of equipment                          |   |                    | -       |   |   |   | 292 |   |
|     Loss on      land held for sale                         |   |                    | -       |   |   |   | 104 |   |
|     Other      Long-term Liabilities                        |   |                    | (4,089  | ) |   |   | (5,068 | ) |
|     Changes      in other components of working capital     |   |                    | (87,880 | ) |   |   | (90,007 | ) |
|                                                                            |   |                    |    |   |   |   |   |   |
| NET CASH USED IN OPERATING      ACTIVITIES                                      |   | $                       | (60,291 | ) |   | $ | (43,529 | ) |
|                                                                            |   |                    |    |   |   |   |   |   |
| Cash Flows from Investing      Activities:                                      |   |                    |    |   |   |   |   |   |
| Acquisition of Keating Building      Company, net of cash balance acquired      |   | $                       | -       |   |   | $ | (5,150 | ) |
| Acquisition of Property and      Equipment                                      |   |                    | (4,188  | ) |   |   | (9,239 | ) |
| Proceeds from sale of Property      and Equipment                               |   |                    | 573     |   |   |   | 662 |   |
| Investment in land held for      sale                                           |   |                    | -       |   |   |   | (117 | ) |
| Investment in available-for-sale      securities                                |   |                    | -       |   |   |   | 1,350 |   |
| Proceeds from sale of      available-for-sale securities                        |   |                    | 375     |   |   |   | - |   |
| Increase in Restricted      Cash                                                |   |                    | (23,523 | ) |   |   | - |   |
| Investment in other      activities                                             |   |                    | 285     |   |   |   | 427 |   |
|                                                                            |   |                    |    |   |   |   |   |   |
| NET CASH USED IN INVESTING      ACTIVITIES                                      |   | $                       | (26,478 | ) |   | $ | (12,067 | ) |
|                                                                            |   |                    |    |   |   |   |   |   |
| Cash Flows from Financing      Activities:                                      |   |                    |    |   |   |   |   |   |
| Proceeds from Long-term      Debt                                               |   | $                       | 4,664   |   |   | $ | 133,986 |   |
| Repayment of Long-term      Debt                                                |   |                    | (7,910  | ) |   |   | (5,415 | ) |
| Issuance of Common Stock and      effect of cashless exercise                   |   |                    | (203    | ) |   |   | (190 | ) |
| Deferred debt    costs                                                          |   |                    | (1,164  | ) |   |   | (336 | ) |
|                                                                            |   |                    |    |   |   |   |   |   |
| NET CASH (USED) PROVIDED BY      FINANCING ACTIVITIES                           |   | $                       | (4,613  | ) |   | $ | 128,045 |   |
|                                                                            |   |                    |    |   |   |   |   |   |
| Net      (Decrease) Increase in Cash and Cash Equivalents                       |   |                    | (91,382 | ) |   |   | 72,449 |   |
| Cash      and Cash Equivalents at Beginning of Year                             |   |                    | 348,309 |   |   |   | 386,172 |   |
|                                                                            |   |                    |    |   |   |   |   |   |
| Cash      and Cash Equivalents at End of Period                                 |   | $                       | 256,927 |   |   | $ | 458,621 |   |
|                                                                            |   |                    |    |   |   |   |   |   |
| Supplemental      Disclosure of Cash Paid During the Period For:                |   |                    |    |   |   |   |   |   |
| Interest                                                                        |   | $                       | 1,197   |   |   | $ | 1,056 |   |
| Income taxes                                                                    |   | $                       | 366     |   |   | $ | 1,787 |   |
|                                                                            |   |                    |    |   |   |   |   |   |
| Supplemental      Disclosure of Non-cash Transactions:                          |   |                    |    |   |   |   |   |   |
| Property and Equipment      acquired through financing arrangements             |   | $                       | 4,754   |   |   | $ | 104 |   |

----

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

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

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

----

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

|                                                                                                               |   | March      31, |    |   | December      31, |   |
|--------------------------------------------------------------------------------------------------------------------|--------|----------------|---------|--------|-------------------|--------|
|                                                                                                               |   | 2010           |    |   | 2009              |   |
|                                                                                                               |   |           |    |
| Corporate      Cash and Cash Equivalents (1)                                                                       |   | $              | 232,857 |   |              | $      | 323,867 |   |
|                                                                                                               |   |           |    |   |              |   |   |   |
| Company's      share of joint venture Cash and Cash Equivalents (2)                                                |   |           | 24,070  |   |              |   | 24,442 |   |
| Total      Cash and Cash Equivalents                                                                               |   | $              | 256,927 |   |              | $      | 348,309 |   |
|                                                                                                               |   |           |    |   |              |   |   |   |
| Restricted      Cash                                                                                               |   | $              | 23,523  |   |              | $      | - |   |
|                                                                                                               |   |           |    |   |              |   |   |   |
| (1)       Available for general corporate purposes                                                            |   |           |    |   |              |   |   |   |
| (2)       Available for joint venture purposes, including future distributions to      joint venture partners |   |

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

|   | Level      1 – inputs are unadjusted quoted prices in active markets for identical      assets or liabilities. |
|--------|----------------------------------------------------------------------------------------------------------------------|

|   | Level      2 – inputs are other than quoted prices in active markets that are either      directly or indirectly observable through market      corroboration. |
|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | Level      3 – inputs are unobservable inputs in which little or no market data      exists, therefore requiring an entity to develop its own assumptions based      on the best information available in the  circumstances. |
|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

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

|                                                               |   |                                         |                                             |   | Fair      Value Measurements at March 31, 2010Using |                                                                                       |
|--------------------------------------------------------------------|--------|----------------------------------------------|--------------------------------------------------|--------|-----------------------------------------------------|--------------------------------------------------------------------------------------------|
|                                                               |   | TotalCarryingValue      atMarch      31,2010 |                                             |   | Quotedprices      inactivemarkets(Level      1)     |                                                                                       |   | Significantotherobservable      inputs(Level      2) |   |   | Significantunobservableinputs (Level      3) |   |
|                                                               |   |                                         |                                             |
| Cash      and Cash Equivalents (1)                                 |   | $                                            | 256,927                                          |   |                                                | $                                                                                          | 256,927 |   |   | $ | - |   |   | $ | - |   |
| Restricted      Cash (1)                                           |   |                                         | 23,523                                           |   |                                                |                                                                                       | 23,523 |   |   |   |  - |   |   |   | - |   |
| Short-term      Investments (2)                                    |   |                                         | 76                                               |   |                                                |                                                                                       | 76 |   |   |   | - |   |   |   | - |   |
| Long-term      Investments –Auction rate securities      (3) |   |                                         |  100,826                                    |   |                                                |                                                                                       |  - |   |   |   |  - |   |   |   |  100,826 |   |
| Total                                                              |   | $                                            | 381,352                                          |   |                                                | $                                                                                          | 280,526 |   |   | $ | - |   |   | $ | 100,826 |   |
|                                                               |   |                                         |                                             |   |                                                |                                                                                       |   |   |   |   |   |   |   |   |   |   |
|                                                               |   |                                         |                                             |   |                                                |                                                                                       |   |   |   |   |   |   |   |   |   |   |
|                                                               |   |                                         |                                             |   |                                                |           Fair Value Measurements at December 31, 2009Using  |   |
|                                                               |   |                                         | TotalCarryingValue atDecember 31,2009  |   |                                                |                                                                                       | Quotedprices inactivemarkets(Level 1)  |   |   |   | Significantotherobservableinputs(Level 2) |   |   |   | Significantunobservableinputs(Level 3) |   |
|                                                               |   |                                         |                                             |   |                                                |                                                                                       |   |   |   |   |   |   |   |   |   |   |
| Cash      and Cash Equivalents (1)                                 |   | $                                            | 348,309                                     |   |                                                | $                                                                                          | 348,309  |   |   | $ | -  |   |   | $ | -  |   |
| Restricted      Cash (1)                                      |   |                                         | -                                           |   |                                                |                                                                                       | -  |   |   |   | -  |   |   |   | -  |   |
| Short-term      Investments (2)                                    |   |                                         | 76                                          |   |                                                |                                                                                       | 76  |   |   |   | -  |   |   |   | -  |   |
| Long-term      Investments –                                 |   |                                         |                                             |   |                                                |                                                                                       |   |   |   |   |   |   |   |   |   |   |
|    Auction      rate securities (3)                 |   |                                         | 101,201                                     |   |                                                |                                                                                       | -  |   |   |   | -  |   |   |   | 101,201  |   |
|         Total              |   | $                                            | 449,586                                     |   |                                                | $                                                                                          | 348,385  |   |   | $ | -  |   |   | $ | 101,201  |   |
|                                                               |   |                                         |                                             |   |                                                |                                                                                       |   |   |   |   |   |   |   |   |   |   |

|   | (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, 2010, the Company had $100.8 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, 2010, are in securities collateralized by student loan      portfolios, totaling $74.9 million, which are guaranteed by the U.S.      government.  Additional amounts totaling $17.9 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.  At December      31, 2009, the Company had $101.2 million invested in ARS which      included $93.2 million in securities collateralized by student loan      portfolios ($75.3 million guaranteed by the U.S. government and $17.9      million privately insured) and $8.0 million invested in tax-exempt      bonds.  Substantially all of the Company’s ARS are rated AAA or      Aaa.  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. |
|--------|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

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

|   |   |
|--------|--------|

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

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

|                              |   |     |     |   |   |   |    | Management |   |   |    |   |
|-----------------------------------|--------|----------|----------|--------|--------|--------|---------|------------|--------|--------|---------|--------|
|                              |   | Building |     |   | Civil  |   |    | Services   |   |   | Total   |   |
|                              |   |     |     |   |   |   |    |       |   |   |    |   |
| Gross      Goodwill               |   | $        | 401,744  |   |   | $      | 300,987 |       |   | $      | 66,638  |   |   | $ | 769,369 |   |
| Accumulated      impairment       |   |     | (146,847 | )      |   |   | -       |       |   |   | (20,051 | )      |   |   | (166,898 | ) |
| Balance      at December 31, 2009 |   | $        | 254,897  |   |   | $      | 300,987 |       |   | $      | 46,587  |   |   | $ | 602,471 |   |
| Balance      at March 31, 2010    |   | $        | 254,897  |   |   | $      | 300,987 |       |   | $      | 46,587  |   |   | $ | 602,471 |   |

|                                    |   | As      of March 31, 2010 |    |
|-----------------------------------------|--------|---------------------------|---------|
|                                    |   | Cost                      |    |   | AccumulatedAmortization |   |   | Net      CarryingValue |   |
| Trade names                        |   | $                         | 96,150  |   |   | $ | - |   |   | $ | 96,150 |   |
| Contractor license                 |   |                      | 5,320   |   |   |   | - |   |   |   | 5,320 |   |
| Customer relationships             |   |                      | 31,700  |   |   |   | (4,962 | ) |   |   | 26,738 |   |
| Construction contract backlog |   |                      | 33,340  |   |   |   | (29,699 | ) |   |   | 3,641 |   |
| Non-compete agreements             |   |                      | 2,400   |   |   |   | (2,160 | ) |   |   | 240 |   |
| Total                                   |   | $                         | 168,910 |   |   | $ | (36,821 | ) |   | $ | 132,089 |   |

----

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

|                                    |   | As      of December 31, 2009 |    |
|-----------------------------------------|--------|------------------------------|---------|
|                                    |   | Cost                         |    |   | AccumulatedAmortization |   |   | Net      CarryingValue |   |
| Trade names                        |   | $                            | 96,150  |   |   | $ | - |   |   | $ | 96,150 |   |
| Contractor license                 |   |                         | 5,320   |   |   |   | - |   |   |   | 5,320 |   |
| Customer relationships             |   |                         | 31,700  |   |   |   | (4,243 | ) |   |   | 27,457 |   |
| Construction contract backlog |   |                         | 33,340  |   |   |   | (28,300 | ) |   |   | 5,040 |   |
| Non-compete agreements             |   |                         | 2,400   |   |   |   | (2,040 | ) |   |   | 360 |   |
| Total                                   |   | $                            | 168,910 |   |   | $ | (34,583 | ) |   | $ | 134,327 |   |

|   |   |
|--------|--------|

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

----

----

----

|   |   |
|--------|--------|

----

|   |   |
|--------|--------|

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

----

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

|                                             |   |           |      |   | Weighted      Average |   |   | Aggregate |   |
|--------------------------------------------------|--------|----------------|-----------|--------|-----------------------|--------|--------|-----------|--------|
|                                             |   | Number         |      |   | Grant      Date       |   |   | Intrinsic |   |
|                                             |   | of      Shares |      |   | Fair      Value       |   |   | Value     |   |
| Granted and      Unvested - January 1, 2010 |   |           | 1,717,501 |   |                  | $      | 24.05  |      |   | $ | 31,052,418 |   |
| Vested                                           |   |           | (460,001  | )      |                  |   | 18.69  |      |   |   | 8,597,419 |   |
| Granted                                          |   |           | 208,333   |   |                  |   | 20.44  |      |   |   | 4,531,243 |   |
| Forfeited                                        |   |           | (15,000   | )      |                  |   | 26.19  |      |   |   | - |   |
| Total      Granted and Unvested                  |   |           | 1,450,833 |   |                  |   | 21.34  |      |   |   | 31,555,618 |   |
| Approved for    grant                            |   |           | 516,667   |   |                  |   | (a     | )         |   |   | 11,237,507 |   |
| Total      Awarded - March 31, 2010              |   |           | 1,967,500 |   |                  | n.a.   |   |      |   | 42,793,125 |   |

|   | (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 |
|              |   |           |
| 2010              |   | 200,000        |
| 2011              |   | 233,333        |
| 2012              |   | 233,333        |
| 2013              |   | 1,150,834      |
| 2014              |   | 150,000        |
| Total             |   | 1,967,500      |

|                                                  |   |           |      |                            | Weighted      Average |   |
|-------------------------------------------------------|--------|----------------|-----------|---------------------------------|-----------------------|--------|
|                                                  |   | Number         |      |                            | Grant      Date       |   |   | Exercise |   |
|                                                  |   | of      Shares |      |                            | Fair      Value       |   |   | Price |   |
| Granted      and Outstanding - January 1, 2010        |   |           | 935,000   |                            |                  | $      | 11.42 |   |   |   | 20.51 |   |
|      Granted                 |   |           | 150,000   |                            |                  |   | 9.79 |   |   |   | 20.44 |   |
|      Forfeited               |   |           | (15,000   | )      |                  |   | 14.84 |   |   |   | 26.19 |   |
| Total      Granted and Outstanding                    |   |           | 1,070,000 |                            |                  |   | 11.20 |   |   |   | 20.42 |   |
|      Approved      for grant |   |           | 450,000   |                            |                  |   | (a | ) |   |   | 20.33 |   |
| Total      Awarded - March 31, 2010              |   |           | 1,520,000 |                            |                  |   | n.a. |   |   |   | 20.45 |   |

|   | (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. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

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

| Risk-free      interest rate                  | 2.65  |  %     |
|-----------------------------------------------|-------|-------------|
| Expected      life of options                 | 5.7   |  years |
| Expected      volatility of underlying stock  | 48.38 |  %     |
| Expected      quarterly dividends (per share) | $0.00 |        |

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

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

| (11) | Business      Segments |
|------|------------------------|

----

|                     |   | March      31, 2010 |    |   | March      31, 2009                    |   |
|--------------------------|--------|---------------------|---------|--------|----------------------------------------|--------|
|                     |   | Revenues            |    |   | Income      fromConstructionOperations |   |   | Revenues |   |   | Income      fromConstructionOperations |   |
|                     |   |                |    |   |                                   |   |   |   |   |   |   |   |
| Building                 |   | $                   | 686,284 |   |                                   | $      | 32,310 |   |   | $ | 1,342,937 |   |   | $ | 43,265 |   |
| Civil                    |   |                | 124,660 |   |                                   |   | 8,290 |   |   |   | 89,345 |   |   |   | 12,711 |   |
| Management      Services |   |                | 54,131  |   |                                   |   | 3,093 |   |   |   | 86,000 |   |   |   | 15,645 |   |
|                     |   |                | 865,075 |   |                                   |   | 43,693 |   |   |   | 1,518,282 |   |   |   | 71,261 |   |
| Corporate      *         |   |                | -       |   |                                   |   | (9,536 | ) |   |   | - |   |   |   | (8,987 | ) |
| Total                    |   | $                   | 865,075 |   |                                   | $      | 34,157 |   |   | $ | 1,518,282 |   |   | $ | 62,634 |   |

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

|                                |   | March      31, 2010 |   |   | March      31, 2009 |   |
|-------------------------------------|--------|---------------------|--------|--------|---------------------|--------|
|                                |   |                |
| Interest      cost                  |   | $                   | 1,139  |   |                | $      | 1,162 |   |
| Expected      return on plan assets |   |                | (1,241 | )      |                |   | (1,219 | ) |
| Amortization      of net loss       |   |                | 612    |   |                |   | 473 |   |
|                                |   |                |   |   |                |   |   |   |
| Net      periodic benefit cost      |   | $                   | 510    |   |                | $      | 416 |   |

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

----

----

----

|                       |   | Backlog      at        |    |   |                      |   |   |              |   |   | Backlog      at          |   |
|----------------------------|--------|------------------------|---------|--------|---------------------------|--------|--------|-------------------|--------|--------|--------------------------|--------|
| (dollars      in millions) |   | December      31, 2009 |    |   | New      Business Awarded |   |   | RevenueRecognized |   |   | March      31, 2010 |   |
|                       |   |                   |    |
| Building                   |   | $                      | 3,125.8 |   |                      | $      | 245.6  |              |   | $      | (686.3                   | )      |   | $ | 2,685.1 |   |
| Civil                      |   |                   | 1,001.5 |   |                      |   | 45.3   |              |   |   | (124.7                   | )      |   |   | 922.1 |   |
| Management      Services   |   |                   | 182.9   |   |                      |   | 21.4   |              |   |   | (54.1                    | )      |   |   | 150.2 |   |
| Total                      |   | $                      | 4,310.2 |   |                      | $      | 312.3  |              |   | $      | (865.1                   | )      |   | $ | 3,757.4 |   |

| (dollars      in millions)                 |   | March      31,2010 |   |   | March      31,2009 |   |    |            $ Change |   |                           | %      Change |
|--------------------------------------------|--------|--------------------|--------|--------|--------------------|--------|---------|----------------------------------------------|--------|--------------------------------|---------------|
| Three      months ended                    |   |               |   |   |               |   |    |                                         |   |       |          |   |
|    Building                 |   | $                  | 686.3  |   |               | $      | 1,342.9 |                                         |   | $                              | (656.6        | ) |   |   | (48.9 | %) |
|    Civil                    |   |               | 124.7  |   |               |   | 89.3    |                                         |   |                           | 35.4          |   |   |   | 39.6 | % |
|    Management      Services |   |               | 54.1   |   |               |   | 86.0    |                                         |   |                           | (31.9         | ) |   |   | (37.1 | %) |
| Total                                      |   | $                  | 865.1  |   |               | $      | 1,518.2 |                                         |   | $                              | (653.1        | ) |   |   | (43.0 | %) |

----

| (dollars      in millions)                 |                          | March      31,2010 |   |   | March      31,2009 |   |   | $      Change |   |   |             % Change       |
|--------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------|--------------------|--------|--------|--------------------|--------|--------|---------------|--------|--------|----------------------------------------------------------------------------------------|
| Three      months ended                    |                                                                                                                                             |               |   |   |               |   |   |          |   |   |                                                                                   |   |
|    Building                 |                                                                                                                                             | $                  | 32.3   |   |               | $      | 43.3   |          |   | $      | (11.0                                                                                  | ) |   |   | (25.4 | %) |
|    Civil                    |                                                                                                                                             |               | 8.3    |   |               |   | 12.7   |          |   |   | (4.4                                                                                   | ) |   |   | (34.6 | %) |
|    Management      Services |                                                                                                                                             |               | 3.1    |   |               |   | 15.6   |          |   |   | (12.5                                                                                  | ) |   |   | (80.1 | %) |
|    Corporate                |                                                                                                                                             |               | (9.5   | )      |               |   | (9.0   | )             |   |   | (0.5                                                                                   | ) |   |   | 5.6 | % |
| Total                                      |                                                                                                                                             | $                  | 34.2   |   |               | $      | 62.6   |          |   | $      | (28.4                                                                                  | ) |   |   | (45.4 | %) |

| (dollars      in millions)              |   | March      31,2010 |   |   | March      31,2009 |   |   | $      Change |   |   | %      Change |
|-----------------------------------------|--------|--------------------|--------|--------|--------------------|--------|--------|---------------|--------|--------|---------------|
| Three      months ended                 |   |               |   |   |               |   |   |          |   |   |          |   |
|    Other      Income     |   | $                  | 0.3    |   |               | $      | 1.3    |          |   | $      | (1.0          | ) |   |   | (76.9 | %) |
|    Interest      Expense |   |               | 1.5    |   |               |   | 1.2    |          |   |   | 0.3           |   |   |   | 25.0 | % |
|    Income      Tax       |   |               | 12.0   |   |               |   | 23.7   |          |   |   | (11.7         | ) |   |   | (49.4 | %) |

----

| (dollars      in millions)                  |   | March      31,2010 |   |   | March      31,2009 |   |
|---------------------------------------------|--------|--------------------|--------|--------|--------------------|--------|
| Cash      flows from:                       |   |               |   |   |               |   |
|    Operating      activities |   | $                  | (60.3  | )      |               | $      | (43.5 | ) |
|    Investing      activities |   |               | (26.5  | )      |               |   | (12.1 | ) |
|    Financing      activities |   |               | (4.6   | )      |               |   | 128.0 |   |
| Net      (decrease) increase in cash        |   |               | (91.4  | )      |               |   | 72.4 |   |
| Cash      at beginning of year              |   |               | 348.3  |   |               |   | 386.2 |   |
| Cash      at end of period                  |   | $                  | 256.9  |   |               | $      | 458.6 |   |

----

|   |   |   |
|--------|--------|--------|

|   | · | our      ability to convert backlog intorevenue; |
|--------|--------|--------------------------------------------------|

|   | · | 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 ofmanagement; |
|--------|--------|----------------------------------------------------------|

|   | · | 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 worldwide 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, 2009 filed with      the Securities and Exchange Commission on March 1,  2010. |
|--------|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| Exhibit      2.1 | Agreement      and Plan of Merger, dated as of April 2, 2008, by and among Perini      Corporation, Trifecta Acquisition LLC, Tutor-Saliba Corporation, Ronald N.      Tutor and shareholders of Tutor-Saliba Corporation signatory thereto      (incorporated by reference to Exhibit 2.1 to Form 8-K filed on April 7,      2008). |
|------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| Exhibit      2.2   | Amendment      No. 1 to the Agreement and Plan of Merger, dated as of May 28, 2008, by      and among Perini Corporation, Trifecta Acquisition LLC, Tutor-Saliba      Corporation, Ronald N. Tutor and shareholders of Tutor-Saliba Corporation      signatory thereto (incorporated by reference to Exhibit 2.2 to Form 10-Q      filed on August 8, 2008).          |
|--------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|               |                                                                                                                                                                                                                                                                                                                                                                  |
| 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).                                                                                                                                                                               |
|               |                                                                                                                                                                                                                                                                                                                                                                  |
| 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      10.1  | Second      Amendment dated January 13, 2010 to the Third Amended and Restated Credit      Agreement among Tutor Perini Corporation, the subsidiaries of Tutor Perini      identified therein, and Bank of America, N.A., and the other lenders that      are parties thereto (incorporated by reference to Exhibit 10.1 to Form 8-K      filed on January 21, 2010). |
|               |                                                                                                                                                                                                                                                                                                                                                                  |
| Exhibit      31.1  | Certification      of Principal Executive Officer Pursuant to Section 302 of the      Sarbanes-OxleyAct      of 2002 – filed herewith.                                                                                                                                                                                                                          |
|               |                                                                                                                                                                                                                                                                                                                                                                  |
| Exhibit      31.2  | Certification      of Principal Financial Officer Pursuant to Section 302 of the      Sarbanes-OxleyAct      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.                                                                                                                                                                          |

----

|                              | Tutor Perini Corporation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|-----------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|                              | Registrant                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Date:  May      7, 2010 | /s/Kenneth      R.      Burk                                                                                          |
|                              | Kenneth      R. Burk, Executive Vice President and Chief Financial    Officer                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
|                              | Duly      Authorized Officer and Principal Financial Officer                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |