Exhibit 10.24

                       AMENDMENT NO. 7 TO CREDIT AGREEMENT

        AMENDMENT NO. 7 dated as of March 23, 1999 among PERINI CORPORATION (the
"Borrower"),  the BANKS listed on the signature pages hereof (collectively,  the
"Banks") and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as Agent (the "Agent").

                              W I T N E S S E T H:

        WHEREAS, the Borrower, the Banks and the Agent are parties to an Amended
and  Restated  Credit  Agreement  dated as of January  17,  1997 (as  heretofore
amended, the "Credit Agreement");

        WHEREAS, the Borrower has requested an extention of the Termination Date
for the Tranche A Commitments  until the first Domestic Business Day of January,
2001, and certain other amendments to the Credit Agreement;

        WHEREAS,  the amount of each Bank's  Tranche B commitment has previously
been reduced to zero, and shall remain at zero hereafter; and

        NOW, THEREFORE, the parties hereto agree as follows:

        SECTION  1.  Definitions;   References.  Unless  otherwise  specifically
defined herein,  each term used herein which is defined in the Credit  Agreement
shall  have the  meaning  assigned  to such term in the Credit  Agreement.  Each
reference to "hereof", "hereunder", "herein" and "hereby" and each other similar
reference  and  each  reference  to "this  Agreement"  and  each  other  similar
reference contained in the Credit Agreement shall from and after the date hereof
refer to the Credit Agreement as amended hereby.

        SECTION  2.  Amendments  to  Definitions.  Section  1.01  of the  Credit
Agreement is amended as follows:

        (a)     The definition of  "Applicable  Base Rate Margin" is amended and
                restated in its entirety to read as follows:

                                       1

                                                                   Exhibit 10.24

                        "Applicable Base Rate Margin" means 1.75%.

        (b)     The definition of "Applicable Euro-Dollar Margin" is amended and
                restated in its entirety to read as follows:

                        "Applicable  Euro-Dollar  Margin" means (i) prior to the
                        first Domestic Business Day of January,  2000, 2.75% and
                        (ii) thereafter, 3.00%

        (c)     The definition of "Asset Sale Letter" is amended and restated in
                its entirety to read as follows:

                        "Asset  Sale  Letter"  means  (i)  for  purposes  of any
                        Disposition  of an asset from the  Effective  Date until
                        the  Amendment  No. 7 Effective  Date, a letter from the
                        Borrower  to the  Banks and the  Agent  listing  certain
                        potential asset sales, which letter shall be in form and
                        substance  satisfactory  to each Bank and  which  letter
                        shall have been delivered to the Banks and the Agent not
                        less  than  five  Domestic  Business  Days  prior to the
                        Effective  Date; or (ii) for purposes of any Disposition
                        of an asset on or after the  Amendment  No. 7  Effective
                        Date, the chart  identified as the "Revised  'Asset Sale
                        Letter'"  distributed  by the  Borrower to the Banks and
                        the Agent on March 22, 1999.

        (d)     The  definition  of  "Commitment  Reduction  Date" is amended by
                deleting "and  September  1999" and inserting in lieu thereof ",
                September 1999, December 1999, March 2000, June 2000,  September
                2000 and December 2000".

        (e)     The definition of  "Disposition"  is amended and restated in its
                entirety to read as follows:

                        "Disposition"   means  any  sale,   conveyance,   lease,
                        granting of any Lien, exchange,  assignment,   Casualty,
                        Condemnation or other transfer and to "Dispose" means to
                        sell, convey, lease, exchange, assign, suffer a Casualty
                        or Condemnation or to otherwise  transfer,  in each case
                        (i)  whether  voluntary  or  involuntary,  (ii)  whether
                        direct or indirect  and (iii)  including  any  agreement
                        providing  for a  Disposition  or granting  any right or
                        option providing for a Disposition.

        (f)     The definition of "Net Proceeds" is amended by deleting the text
                that follows the clause "and including all Awards (as defined in
                any  Mortgage)  received  in respect of any  Condemnation,"  and
                inserting in its place the following text:

                                       2

                                                                   Exhibit 10.24

                        ", less (without duplication)  reasonable  out-of-pocket
                        fees, commissions and other transaction expenses paid or
                        payable  by  the   Borrower   or  such   Subsidiary   to
                        unaffiliated  third  parties  in  connection  with  such
                        Disposition,   all   senior   mortgage   debt   owed  to
                        unaffiliated  third parties and required to be repaid at
                        the time of such Disposition and any property taxes paid
                        or payable (as  estimated by a financial  officer of the
                        Borrower  in good  faith) in respect  thereof;  provided
                        that with  respect to any  Disposition  by a  Subsidiary
                        that is not  100%-owned  (directly or indirectly) by the
                        Borrower (a "Joint  Venture"),  the term "Net  Proceeds"
                        shall be the  product  of the amount  determined  as set
                        forth  above  in  this  definition,  multiplied  by  the
                        greater  of  (i)  the  aggregate   percentage  ownership
                        interest  that the  Borrower,  directly  or  indirectly,
                        holds in such  Joint  Venture  and  (ii)  the  aggregate
                        percentage  of such Net  Proceeds  that the Borrower and
                        its  100%-owned  (directly or  indirectly)  Subsidiaries
                        would be entitled to receive if such Joint  Venture were
                        to  immediately  distribute  all of such Net Proceeds to
                        the  partners,  joint  venturers  or  other  holders  of
                        interests   in  such  Joint   Venture,   determined   in
                        accordance  with the applicable  partnership  agreement,
                        joint venture agreement or other governing document."

        (g)     The definition of "Perini International" is amended and restated
                in its entirety to read as follows:

                        "Perini International" means Perini Management Services,
                        Inc., a Massachusetts  corporation formerly named Perini
                        International Corporation.

        (h)     The  definition  of  "Termination  Date" is amended by  deleting
                "January, 2000" and inserting in lieu thereof "January, 2001".

        (i)     The  definition of "Tranche B  Commitment"  is amended by adding
                the following sentence at the end thereof:

                        "The  aggregate  amount of the Tranche B  Commitment  of
                        each  Bank on and after the  Amendment  No. 7  Effective
                        Date shall be zero."

        (j)     The  following new  definitions  are  inserted,  in  appropriate
                alphabetical order:

                        "Amendment  No. 7  Effective  Date"  means the date when
                        Amendment  No. 7 to Credit  Agreement  dated as of March
                        23, 1999 becomes effective in accordance with its terms.

                                       3

                                                                   Exhibit 10.24

                        "Harris  Bank LC" means the  letter of credit  listed on
                        Schedule  1.01 issued by Harris  Trust & Savings Bank to
                        State Street Bank and Trust Company,  as Trustee, as the
                        same may be amended from time to time.

                        "Rincon Restructuring" means the restructuring, with the
                        prior  written  consent of the  Required  Banks,  of the
                        payment   and  other   obligations   under  the   Rincon
                        Agreements of the Borrower, Rincon Center Associates and
                        any other  Subsidiaries  of the Borrower  party thereto,
                        substantially   as   contemplated   by  the   "Rincon  I
                        Deed-In-Lieu  Term Sheet" dated October 23, 1998 and the
                        "Rincon  II  Term  Sheet"  dated  October  23,  1998  or
                        pursuant to such other terms and  conditions as shall be
                        acceptable  to the  parties  thereto  and  the  Required
                        Banks,  with the result that any and all defaults and/or
                        events of default existing under any Rincon Agreement at
                        any time  prior to such  restructuring  shall  have been
                        waived or cured or otherwise ceased to exist.

        SECTION 3.  Amendment to Letters of Credit Provisions.  

        (a)     Section 2.16(a) of the Credit Agreement is amended as follows:

                (i)     Clause (ii) is amended and  restated in its  entirety to
                        read as follows:

                        "(ii)  the  aggregate  amount  of the  Letter  of Credit
                        Liabilities for all Performance  Letters of Credit shall
                        not exceed $5,000,000".

                (ii)    The  following  proviso  is  inserted  at the end of the
                        third sentence:

                        ", and  provided  further that no Letter of Credit shall
                        be issued to replace,  in whole or in part,  directly or
                        indirectly, the Harris Bank LC".

        (b)     Section  2.16(c) of the Credit  Agreement is amended by amending
                and restating the first sentence thereof in its entirety to read
                as follows:

                        "The Borrower  shall pay to the Agent a letter of credit
                        fee  at  a  per  annum  rate  equal  to  the  Applicable
                        Euro-Dollar  Margin  multiplied by the aggregate  amount
                        available  for  drawings  under  each  Letter  or Credit
                        issued from time to time, any such fee to be payable for
                        the account of the Banks  ratably in proportion to their
                        respective Tranche A Commitment Percentages."

        SECTION 4. Amendment to Scheduled Commitment Reductions. Section 2.10(b)
of the Credit Agreement is amended as follows:

                                       4

                                                                   Exhibit 10.24

        (a)     The mandatory  reductions  of the  Commitments  in March,  1999,
                June, 1999 and September, 1999 shown therein are deleted and the
                following  mandatory  reductions of the Commitments are inserted
                in lieu therof:

                "March 1999                                    $0
                June 1999                                      $2,500,000
                September 1999                                 $5,000,000
                December 1999                                  $12,500,000
                March 2000                                     $0
                June 2000                                      $2,500,000
                September 2000                                 $5,000,000
                December 2000                                  $7,500,000".

        (b)     The proviso  therein is amended and  restated in its entirety to
                read as follows:

                "provided that if the  Commitments  shall be reduced at any time
                after the  Amendment  No. 7 Effective  Date in  accordance  with
                Section  2.09 or  2.10(c)  such  reductions  shall be applied to
                decrease  the  amounts  set  forth  above,  first  for any  such
                reductions  prior to the  December,  1999  Commitment  Reduction
                Date,  to  decrease  by a maximum of  $5,000,000  the  aggregate
                amount of reduction  in  Commitments  required on the  December,
                1999 Commitment Reduction Date, second to decrease the amount of
                the reduction in Commitments  required on the Termination  Date,
                and  thereafter to decrease the required  amount of reduction in
                Commitment in reverse chronological order."

        SECTION  5.   Amendment  to   Mandatory   Commitment   Reductions   From
Dispositions of Real Estate  Investments and Other Property.  Section 2.10(c) of
the Credit Agreement is amended as follows:

        (a)     Clause (i) is amended and  restated  in its  entirety to read as
                follows:

                "(i)  immediately upon receipt by the Borrower or any Subsidiary
                at any time of any  proceeds  from any  Disposition  of any Real
                Estate  Investment or any other real property of the Borrower or
                any  Subsidiary  (including  without  limitations  any  proceeds
                received by the Borrower or any Subsidiary as consideration  for
                the granting of any right or option  providing for a Disposition
                but excluding operating receipts from Real Estate  Investments),
                by an amount equal to (x) 100% of the Net  Proceeds  realized by
                the  Borrower or any  Subsidiary  in respect  thereof  until the
                aggregate  amount of Net  Proceeds  realized by the Borrower and
                its  Subsidiaries in respect of all  Dispositions of Real Estate
                Investments  and other real property  after the  Amendment  No.7
                Effective  Date equals  

                                       5

                                                                   Exhibit 10.24

                $5,000,000, (y) 50% of the Net Proceeds realized by the Borrower
                or any  Subsidiary  in respect  thereof  to the extent  that the
                aggregate  amount of Net  Proceeds  realized by the Borrower and
                its  Subsidiaries in respect of all  Dispositions of Real Estate
                Investments  and other real  property  after the Amendment No. 7
                Effective Date exceeds  $5,000,000 but is less than  $6,000,000,
                and (z) 33-1/3% of the Net Proceeds  realized by the Borrower or
                any  Subsidiary  in  respect  thereof  to the  extent  that  the
                aggregate  amount of Net  Proceeds  realized by the Borrower and
                its  Subsidiaries in respect of all  Dispositions of Real Estate
                Investments  and other real  property  after the Amendment No. 7
                Effective Date is at least $6,000,000."

        (b)     Clause  (ii) is amended by  inserting  at the  beginning  of the
                parenthetical  contained  therin,  immediately  before  the word
                "excluding", the following phrase:

                "including  without  limitation  any  proceeds  received  by the
                Borrower or any Subsidiary as consideration  for the granting of
                any right or option providing for a Disposition but".

        SECTION 6. Amendment to Permit Certain Derivatives Obligations.  Section
5.02(b) of the Credit  Agreement is amended and restated in its entirety to read
as follows:

                "The  Borrower  will  not,  and  will  not  permit  any  of  its
                Subsidiaries  to, become a party to any  Derivatives  Obligation
                other than interest rate swap,  interest rate cap, interest rate
                collar or other  interest rate hedging  transactions  and/or any
                foreign   currency    exchange   or   other   currency   hedging
                transactions,  but only if (x) each such  transaction  is with a
                Bank or an Affiliate  of a Bank,  (y) each such  transaction  is
                entered  into in the  ordinary  course of  business  to hedge or
                mitigate risks to which the Borrower or any of its  Subsidiaries
                is exposed in the conduct of its business or the  management  of
                its  liabilities,  and  (z) the  aggregate  notional  amount  of
                obligations for which the interest rate or currency  exposure is
                hedged  by all such  transactions  does  not at any time  exceed
                $2,500,000."

        SECTION 7.  Amendment  to Debt  Covenant.  Section  5.08(a)(vii)  of the
Credit  Agreement  is amended by amending  and  restating  subclause  (x) in the
proviso thereof in its entirety to read as follows:

                "(x) Modified  Parent  Company Debt shall not at any time exceed
                $120,000,00".

        SECTION 8. Amendment to Minimum Consolidated Adjusted Tangible Net Worth
Covenant.  Section  5.09 of the  Credit  Agreement  is  amended  by  adding  the
following at the end thereof:

                                       6

                                                                   Exhibit 10.24

                "March 31, 2000                        $128,000,000
                June 30, 2000                          $132,000,000
                September 30, 2000                     $136,000,000
                December 31, 2000                      $140,000,000".

        SECTION 9. Amendment to Minimum  Operating  Cash Flow Covenant.  Section
5.10 is amended and restated in its entirety to read as follows:

                "SECTION 5.10.  Minimum  Operating Cash Flow. The Borrower shall
                not permit  Operating Cash Flow to be less than  $15,000,000 for
                any of:  (i) the  period  of four  consecutive  fiscal  quarters
                ending  March 31,  1999,  (ii) the  period  of five  consecutive
                fiscal  quarters  ending  June 30,  1999 and (iii) the period of
                four consecutive fiscal quarters endings September 30, 1999. The
                Borrower  shall not permit  Operating  Cash Flow to be less than
                $20,000,000 for any period of four consecutive  fiscal quarters,
                beginning  with  the four  consecutive  fiscal  quarters  ending
                December 31, 1999."

        SECTION 10.  Amendment to Asset Sale  Covenant.  Section  5.12(b) of the
Credit Agreement is amended as follows:

        (a)     The  introductory  phrase "The  Borrower  will not, and will not
                permit any of its  Subsidiaries  to,  sell,  lease or  otherwise
                dispose of any of its or their  assets,  other than:" is changed
                to "The  Borrower  will  not,  and  will not  permit  any of its
                Subsidiaries  to,  Dispose of any of its or their assets,  other
                than:"; and

        (b)     Clause (iii) is amended by amending and restating  subclause (A)
                therein in its entirety to read as follows:

                "(A) a Disposition  of any asset if the aggregate  amount of the
                fair market value of all  Dispositions for which consent  is not
                provided  during any fiscal year is less than  $500,000  and the
                Borrower  delivers to each of the Banks prompt written notice of
                each such Disposition or".

        SECTION 11. Amendment to Restricted  Payments Covenant.  Section 5.14(c)
of the Credit Agreement is amended by deleting  "$90,000,000" in clause (ii) and
inserting in lieu thereof "$75,000,000".

        SECTION 12. Amendment to Real Estate Investments Convenant. Section 5.15
of the Credit Agreement is amended by deleting the maximum amount of Real Estate
Investments  permitted  during the fiscal  year ended  December  31,  1999 shown
therein and inserting the following  maximum amounts of Real Estate  Investments
in lieu thereof:

                                       7

                                                                   Exhibit 10.24

               "December 31, 1999                       $6,000,000
               December 31, 2000                        $3,900,000".

        SECTION 13.  Amendment to Events of Default.  Section 6.01 of the Credit
Agreement is amended by (i) deleting the word "or" at the end of subsection  (m)
thereof,  (ii)  adding the word "or" at the end of  subsection  (n)  thereof and
(iii) inserting the following new subsection (o):

                "(o) the Rincon Restructuring shall not have become effective on
                or before April 30, 1999, or the Borrower  shall fail to perform
                any of its  obligations  under Section 15 of the Amendment No. 7
                to Credit Agreement within ten days after written notice thereof
                has been given to the  Borrower  by the Agent at the  request of
                the Required Banks;".

        SECTION 14.  Amendment Fee. In  consideration  for this  Amendment,  the
Borrower agrees to pay the Agent,  for the account of each Bank in proportion to
its  aggregate  Commitments,  a fee  equal  to 0.50%  of such  Bank's  aggregate
Commitments,  of which one-half shall be payable no later than the Amendment No.
7 Effective Date and one-half shall be payable on the last Domestic Business Day
of May,  2000;  provided  that the  Borrower  shall not be  required  to pay the
portion of such fee  payable on the last  Domestic  Business  Day of May 2000 if
prior to such date all principal,  interest,  fees and other amounts outstanding
or payable under the Credit  Agreement and all other  Financing  Documents shall
have been paid and all Letters of Credit and  Commitments  shall have expired or
been terminated.  It shall be an Event of Default pursuant to Section 6.01(a) of
the Credit Agreement if the Borrower shall fail to pay any such amount when due.

        SECTION 15.  Restructuring of the Rincon Agreements.

        (a)     The  Borrower  agrees to pay the Agent,  for the account of each
                Bank in proportion to its aggregate Commitments,  a fee equal to
                $150,000 on the date when the Rincon  Restructuring shall become
                effective.  This fee  shall be  payable  whether  or not the fee
                required  by Section  15(b)  shall have  become  payable or been
                paid.

        (b)     The  Borrower  agrees to pay the Agent,  for the account of each
                Bank in proportion to its aggregate Commitments,  a fee equal to
                $50,000 if the Rincon Restructuring does not become effective on
                or before April 30, 1999.

        (c)     The  Borrower  shall hold a meeting for  representatives  of the
                Banks during each month from April 1999 until the  completion of
                the Rincon  Restructuring,  at a time and place to be determined
                by the Agent (after consultation with the Banks) on ten Domestic
                Business  Days' notice to the  Borrower  and the Banks,  for the
                purpose of  discussing  the  status of the Rincon  Restructuring
                with such of the Borrower's officers,  

                                       8

                                                                   Exhibit 10.24

                employees and advisors as the Borrower shall designate or as the
                Agent shall designate at the reasonable request of any Bank.

        SECTION 16.  Consent to Amendment  of  Management  Agreement.  Each Bank
consents to an amendment of the Management Agreement to (a) extend the specified
date for termination of the Management  Agreement until December 31, 999 and (b)
increase  the number of shares issuable upon  exercise  of the  options  granted
thereunder from 150,000 shares of common stock to 225,000 shares.

        SECTION 17. Consents to Amendments of Financing Documents. Each Bank

        (a)     consents  to the  amendments  to the  Collateral  Documents  and
                Subsidiary Guarantee Agreement set forth in the Global Amendment
                to Collateral  Documents and  Subsidiary  Guarantee  dated as of
                March 23,  1999,  substantially  in the form of Exhibit A hereto
                (the "Global Amendment");

        (b)     consents  to the  amendments  to the  Mortgages,  in  each  case
                substantially in the form of Exhibit B hereto (collectively, the
                "New Mortgage Amendments");

        (c)     agrees that the Agent is  authorized  to execute and deliver the
                Global Amendment and New Mortgage Amendments upon its receipt of
                duly  executed  counterparts  hereof signed by each Bank (or, in
                the case of any Bank as to which an executed  counterpart  shall
                not  have  been   received,   the  Agent  shall  have   received
                telgraphic,  telex or other written confirmation from such party
                of execution of a counterpart hereof by such party).


        SECTION 18.  Representations  and Warranties  Correct;  No Default.  

        (a)     The  Borrower  and  each  Subsidiary  Guarantor  represents  and
                warrants that on and as of the date hereof,  after giving effect
                to this  Amendment,  (a) the  representations  and warranties of
                each Obligor contained in each Financing  Document,  as amended,
                to which it is a party  are true and (b) no  Default  under  the
                Credit  Agreement  exists,  other than a Default  that arises by
                reason of the defaults  and/or "Events of Default"  described in
                the July 2, 1998 or October 2, 1998  letter from  Citicorp  Real
                Estate, Inc. to Rincon Center Associates.

        (b)     Except as set forth in Schedule  18(b),  the  Borrower  and each
                Subsidiary  Guarantor  represents and warrants that on and as of
                the  date  hereof,  all  of the  information  set  forth  in the
                Perfection  Certificates  (as defined in the  Borrower  Security
                Agreement or Subsidiary Security Agreement,  as the case may be)
                of the  Borrower  and each  Subsidiary  Guarantor is correct and
                complete.

                                       9

                                                                   Exhibit 10.24

        SECTION 19. Effect of  Amendments. Except as expressly set forth herein,
the amendments  contained  herein shall not constitute an amendment or waiver of
any  term  or  condition  of the  Credit  Agreement  or of any  other  Financing
Document,  and all such  terms and  conditions  shall  remain in full  force and
effect and are hereby ratified and confirmed in all respects.

        SECTION 20. Governing  Law.  This  Amendment  shall be  governed  by and
construed in accordance with the laws of the State of New York.

        SECTION 21. Counterparts.  This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

        SECTION 22. Consent by Subsidiary  Guarantors. By signing this Amendment
below,  each Subsidiary  Guarantor  affirms its obligations under the Subsidiary
Guarantee  Agreement  and  acknowledges  that this  Amendment  shall not  alter,
release,  discharge or otherwise  affect any of such  obligations,  all of which
shall remain in full force and effect and are hereby  ratified and  confirmed in
all respects.

        SECTION 23.  Effectiveness.  This Amendment shall become effective as of
the date hereof when the Agent shall have received:

        (a)     dully executed counterparts hereof signed by the Borrower,  each
                Bank, the Agent and each  Subsidiary  Guarantor (or, in the case
                of any party as to which an executed  counterpart shall not have
                been received, the Agent shall have received telegraphic,  telex
                or other written  confirmation from such party of execution of a
                counterpart hereof by such party);

        (b)     duly  executed  counterparts  of the  Global  Amendment  and New
                Mortgage Amendments, in each cash signed by the parties thereto;

        (c)     for the  account  of each Bank in  proportion  to its  aggregate
                Commitments, the one-half of the restructuring fee payable under
                Section 14;

        (d)     evidence   satisfactory   to   the   Agent   that   arrangements
                satisfactory  to it have  been  made  for  recording  of the New
                Mortgage Amendments;

        (e)     an endorsement to each title insurance  policy  delivered to the
                Agent  pursuant  to  the  Credit  Agreement  insuring  that  the
                coverage  under such policy is unaffected by this  Amendment and
                the New Mortgage Amendments; and

        (f)     opinion or  opinions of counsel  for the  Borrower,  in form and
                substance  satisfactory to the  Administrative  Agent,  covering
                such  matters  relating 

                                       10

                                                                   Exhibit 10.24

                to this Amendment and the transaction contemplated hereby as the
                Administrative  Agent  or  the  Required  Banks  may  reasonably
                request.

        IN WITNESS WHEREOF,  the parties hereto have caused this Amendment to be
duly executed by their respective authorized officers as of the date first above
written.



                                       11