AMENDMENT NO. 1 TO CREDIT AGREEMENT

              AMENDMENT  NO.  1 dated  as of  February  26,  1996  among  PERINI
CORPORATION  (the  "Borrower"),  the BANKS listed on the signature  pages hereof
(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 parties hereto have heretofore entered into a Credit
Agreement dated as of December 6, 1994 (the "Agreement"); and

              WHEREAS,  the  parties  hereto  desire to amend the  Agreement  as
provided hereinafter.

              NOW, THEREFORE, the parties hereto agree as follows:

              1. Definitions;  References. Unless otherwise specifically defined
herein,  each term used herein which is defined in the Agreement  shall have the
meaning  assigned to such term in the  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
Agreement shall from and after the date hereof refer to the Agreement as amended
hereby.

              2. Amendment of Section 1.01 of the Agreement. Section 1.01 of the
Agreement is amended hereby by: (A) adding thereto the following definitions:

              "Bridge Bank" means each bank listed on the signature pages of the
     Bridge Credit Agreement, each Assignee (as defined therein) which becomes a
     Bridge  Bank  pursuant to Section  8.06(c)  thereof,  and their  respective
     successors.

              "Bridge  Commitment" means a commitment by a Bridge Bank under the
     Bridge Credit Agreement.

              "Bridge Credit Agreement" means the Agreement dated as of February
     26, 1996 among Perini  Corporation,  the Bridge  Banks and Morgan  Guaranty
     Trust Company, as Agent.

              "Bridge  Loan" means a loan made by a Bridge Bank under the Bridge
     Credit Agreement.

              "Derivatives  Obligations"  of any Person means all obligations of
     such Person in respect of any rate swap  transaction,  basis swap,  forward
     rate transaction,  commodity swap, commodity option, equity or equity index
     swap,  equity or equity index  option,  bond option,  interest rate option,
     foreign exchange transaction,  cap transaction,  floor transaction,  collar
     transaction,   currency   swap   transaction,   cross-currency   rate  swap
     transaction,  currency option or any other similar  transaction  (including
     any  option  with  respect  to any of the  foregoing  transactions)  or any
     combination of the foregoing transactions.

              "Mortgage   Banks"  means  (i)  Comerica  Bank,  as  successor  to
     Manufacturers  National  Bank of  Detroit,  in its  capacity as holder of a
     Promissory  Note of the  Borrower  dated  April 4,  1991,  in the  original
     principal amount of $1,200,000, and the mortgagee pursuant to a mortgage on
     the  property  described  as Item 15 in Part I of Schedule III hereto which
     secures such Promissory  Note, and its successors and assigns,  (ii) Harris
     Trust and Savings Bank, as successor to Barclays Bank PLC,  Boston  Branch,
     in its  capacity as the issuer of a letter of credit for the account of the
     Borrower  in the  initial  stated  amount  of  $4,106,850,  the  maker of a
     commitment to lend up to $4,106,850 to the Borrower  pursuant to the Letter
     of Credit and  Reimbursement  Agreement dated as of October 1, 1985 and the
     "Bank"  described in the  mortgage on the property  described as Item 12 in
     Part I of Schedule III hereto which  secured the  obligations  of the under
     such Letter of Credit and  Reimbursement  Agreement  and (iii) Fleet Credit
     Corporation,  as the  lessor  of  computer  equipment  and  other  personal
     property to the Borrower and certain of its Subsidiaries and joint ventures
     pursuant to the Master  Equipment Lease No.  1100641700  dated December 30,
     1988  (including  the Addendum  thereto dated  December 30, 1988),  and the
     schedules executed thereunder prior to February 26, 1996.

              "Other LC Bank"  means  each bank  listed on  Schedule  V attached
     hereto, its successors and assigns.

              "Other Letters of Credit" means the letters of credit described on
     Schedule V attached hereto.

              "Other  Mortgage/Lease  Obligations"  means the obligations of the
     Borrower  to  any  Mortgage  Banks  under  the  documents,  agreements  and
     instruments  described in the definition of Mortgage  Banks,  and all other
     supplemental or additional documents,  agreements and instruments delivered
     in connection therewith prior to February 26, 1996.

              "Other   Reimbursement   Obligations"   means   at  any  date  the
     obligations  of the  Borrower,  whether or not  contingent at such time, to
     reimburse  any Other LC Banks for the amount  paid or payable by such Other
     LC Bank in respect of a drawing under an Other Letter of Credit.

              "Rincon Swap" means the interest rate exchange transaction between
     Rincon Center Associates,  a California limited partnership,  as Fixed Rate
     Payor, and Citicorp Real Estate, Inc., as Variable Rate Payor, as confirmed
     by the Confirmation for Interest Rate Exchange Transaction date October 18,
     1993 with Transaction Reference Number 931913.

(B) deleting the definition of "Construction Claim"; (C) deleting "two, three or
six" in clause (1) of the definition of "Interest  Period" and inserting in lieu
thereof "two or three"; (D) revising each of the following definitions to
read as follows:

              "Borrower  Pledge  Agreement"  means the Borrower Pledge Agreement
     dated as of December 6, 1994 between the Borrower and the Agent, as amended
     and restated as of February 26, 1996 in  substantially  the form of Exhibit
     E-2 hereto,  and as the same may be amended  from time to time as permitted
     herein and in accordance with the terms thereof.

              "Borrower   Security   Agreement"  means  the  Borrower   Security
     Agreement  dated  as of  February  26,  1996 in  substantially  the form of
     Exhibit D hereto  between the Borrower and the Agent and as the same may be
     amended from time to time as permitted  herein and in  accordance  with the
     terms thereof (the Borrower Security Agreement dated as of December 6, 1994
     executed and  delivered in  connection  with the  execution and delivery of
     this Agreement having terminated upon collection by the Borrower of all the
     Collateral pledged thereunder).

              "Collateral  Documents" means the Borrower Pledge  Agreement,  the
     Borrower  Security  Agreement,   the  Subsidiary  Security  Agreement,  the
     Subsidiary  Pledge  Agreement,  the Deeds of Trust,  the  Mortgages and all
     other supplemental or additional  security  agreements,  pledge agreements,
     mortgages or similar instruments delivered pursuant hereto or thereto.

              "Deeds of Trust" means the Deed of Trust, Assignment of Leases and
     Rents,  Security Agreement and Financing  Statement dated as of December 6,
     1994 for each of the properties  described as Items 1 and 2 on Schedule III
     hereto, each substantially in the form of Exhibits H-1 and H-2 hereto.

              "Financing  Documents"  means this  Agreement,  the Bridge  Credit
     Agreement,  the Subsidiary Guarantee Agreement, the Notes, the Bridge Notes
     (as defined in the Bridge Credit Agreement) and the Collateral Documents.

              "Mortgaged  Facilities" means the properties described as Items 1,
     2, 3, 4, 5, 6, 8, 9, 12, 13 and 15 in Part I of Schedule III hereto.

              "Mortgages"  means the  Mortgage,  Assignment of Leases and Rents,
     Security  Agreement and Financing  Statement  dated as of February 26, 1996
     for each of the Mortgaged  Facilities  described as Items 3, 4, 5, 6, 8, 9,
     12, 13 and 15 in Part I of Schedule III hereto,  each  substantially in the
     form of Exhibits I-1 through I-5 hereto.

              "Paramount  Development  Associates"  means Paramount  Development
     Associates, Inc., a Massachusetts corporation.

              "Perini Land and  Development"  means Perini Land and  Development
     Company, a Delaware  corporation,  and its successor by merger, Perini Land
     and  Development  Company,  Inc.,  a  Massachusetts  corporation,  upon its
     reincorporation in Massachusetts on December 30, 1994.

              "Subsidiary  Guarantee  Agreement" means the Subsidiary  Guarantee
     Agreement dated as of December 6, 1994 between the Borrower, the Subsidiary
     Guarantors party thereto and the Agent, as executed and delivered  pursuant
     to Section 3.01(c) hereof and attached hereto as Exhibit F-1, as amended by
     Amendment No. 1 dated as of February 26, 1996 in substantially  the form of
     Exhibit  F-2  hereto,  and as the same may be amended  from time to time as
     permitted herein and in accordance with the terms thereof.

              "Subsidiary  Guarantor"  means  each of Perini  Building  Company,
     Perini  International,  Perini  Land and  Development,  R. E. Dailey & Co.,
     Paramount  Development  Associates,  Pioneer  Construction,  Inc.,  a  West
     Virginia  corporation,  Perini  Environmental  Services,  Inc.,  a Delaware
     corporation,  Perini Resorts, Inc., a California corporation and each other
     Subsidiary  of the  Borrower  which  becomes  a  party  to  the  Subsidiary
     Guarantee Agreement, and their respective successors.

              "Subsidiary   Pledge   Agreement"  means  the  Subsidiary   Pledge
     Agreement  dated  as of  February  26,  1996 in  substantially  the form of
     Exhibit J hereto  among the  Subsidiary  Guarantors  party  thereto and the
     Agent, as executed and delivered  pursuant to Section 3.01(c) of the Bridge
     Credit  Agreement  and as the  same  may be  amended  from  time to time as
     permitted herein and in accordance with the terms thereof.

              "Subsidiary  Security  Agreement"  means the  Subsidiary  Security
     Agreement  dated as of  December  6, 1994 among the  Subsidiary  Guarantors
     party  thereto and the Agent,  as amended and  restated as of February  26,
     1996 in substantially the form of Exhibit G hereto,  and as the same may be
     amended from time to time as permitted  herein and in  accordance  with the
     terms thereof.

(E) changing  "Perini" to "the Borrower's" each time it appears in "Consolidated
Current Assets";  and (F) renumbering  clauses (v) and (vi) as (vi) and (vii) in
the definition of "Debt" and adding the following clause:

     "(v) all non-contingent  obligations of such Person to reimburse issuers of
     letters of credit for drawings under such letters of credit (other than the
     Other  Reimbursement  Obligations and the obligation to reimburse Hong Kong
     and  Shanghai  Bank for  $1,800,000  of letters of credit  issued by it and
     outstanding on the date hereof),"

              3. Amendment of Section 2.09 of the Agreement. Section 2.09 of the
Agreement is hereby  amended by adding the  following  proviso at the end of the
first sentence:

     "; provided that any such voluntary termination or reduction of Commitments
     may only be made after the repayment in full of the Bridge Loans and Bridge
     Reimbursement  Obligations and termination of the Bridge  Commitments under
     the Bridge  Credit  Agreement  and  termination  of the  Bridge  Letters of
     Credit."

              4.  Amendment  of Section  2.10(b) of the  Agreement.  Clauses (i)
through (iii) of Section  2.10(b) of the Agreement are hereby amended to read in
their entirety as follows:

              "(i) immediately upon receipt by the Borrower or any Subsidiary of
     the  proceeds  from  the  collection,  sale  or  other  disposition  of any
     Collateral  (excluding (A) payments in the ordinary  course on construction
     contracts,  (B)  operating  receipts  from  Real  Estate  Investments,  (C)
     liability insurance proceeds and (D) income of not more than $70,000 earned
     from Temporary Cash Investments  during any fiscal year) by an amount equal
     to (1) 100% of such  proceeds net of all  out-of-pocket  costs,  all senior
     mortgage debt, fees,  commissions and other expenses reasonably incurred in
     respect  of such  collection,  sale or  disposition  and any taxes  paid or
     payable (as estimated by a financial officer of the Borrower in good faith)
     in respect thereof less (2) the amount by which the Bridge  Commitments are
     reduced pursuant to Section  2.10(b)(i) of the Bridge Credit Agreement with
     respect to such sale or other disposition;  provided that no such reduction
     shall be required  unless and until,  and then only to the extent that, the
     aggregate  amount of such net  proceeds  received by the  Borrower  and its
     Subsidiaries  exceeds,  in the case of an item of  Collateral  specified in
     Schedule  VII hereto,  the amount set forth  opposite  such item or, in the
     case of other  Collateral,  $2,000,000  in the aggregate for all such other
     Collateral;

              (ii)  immediately  upon  the  completion  of an  issuance  by  the
     Borrower of convertible preferred stock or other equity issue, by an amount
     equal  to  (1)  $15,000,000  less  (2)  the  amount  by  which  the  Bridge
     Commitments  are  reduced  pursuant  to Section  2.10(b)(ii)  of the Bridge
     Credit Agreement with respect to such issuance;  provided that in the event
     that  the  proceeds  of such  issuance  net of all  out-of-pocket  expenses
     reasonably  incurred  in  respect  of such  issuance  and any taxes paid or
     payable (as estimated by a financial officer of the Borrower in good faith)
     in  respect  thereof  exceeds  $30,000,000,  the  aggregate  amount  of the
     Commitments  shall be  reduced  by an  amount  not less than the sum of (A)
     $15,000,000  plus (B) 50% of the excess over  $30,000,000  of such proceeds
     less (C) the amount by which the Bridge Commitments are reduced pursuant to
     Section  2.10(b)(ii)  of the Bridge Credit  Agreement  with respect to such
     issuance; and

              (iii) by $2,000,000 on the first Euro-Dollar  Business Day of each
     month  during the period  beginning  the later of (x) the  repayment of all
     amounts payable under,  and termination of, the Bridge Credit  Agreement or
     (y)  September  1, 1996 and ending  December 31, 1996 unless such period is
     extended  by the  Required  Banks at any time or from time to time prior to
     the end of such period as it may be so extended from time to time."

              5. Amendment of Section 2.11(a) of the Agreement.  Section 2.11(a)
of the Agreement is hereby amended by adding the following proviso at the end of
the first sentence:

     ";  provided  that any such  voluntary  prepayments  may only be made after
     repayment in full of the Bridge Loans and Bridge Reimbursement  Obligations
     and termination of the Bridge Commitments under the Bridge Credit Agreement
     and termination of the Bridge Letters of Credit."

              6. Amendment of Section 2.16(c) of the Agreement.  Section 2.16(c)
of the Agreement is hereby amended by: (A) changing "1.00%" to "1.75%" in clause
(i); and (B) changing "2.25%" to "2.75%" in clause (ii).

              7. Amendment of Section 2.17 of the Agreement. Section 2.17 of the
Agreement is hereby amended to read in its entirety.

              "2.17.  Taxes.  (a) For purposes of this  Section,  the  following
terms have the following meanings:

              "Taxes" means any and all present or future taxes, duties, levies,
     imposts, deductions, charges or withholdings with respect to any payment by
     the  Borrower  pursuant  to this  Agreement  or  under  any  Note,  and all
     liabilities  with respect  thereto,  excluding (i) in the case of each Bank
     and the Agent,  taxes imposed on its income, and franchise or similar taxes
     imposed on it, by a  jurisdiction  under the laws of which such Bank or the
     Agent (as the case may be) is organized or in which its principal executive
     office is located or, in the case of each Bank, in which its Lending Office
     is located and (ii) in the case of each Bank, any United States withholding
     tax  imposed  on such  payments  but only to the  extent  that such Bank is
     subject  to United  States  withholding  tax at the time  such  Bank  first
     becomes a party to this Agreement.

              "Other  Taxes"  means any present or future  stamp or  documentary
     taxes and any other excise or property taxes, or similar charges or levies,
     which arise from any payment made  pursuant to this  Agreement or under any
     Note or from the  execution or delivery  of, or otherwise  with respect to,
     this Agreement or any Note.

              (b) Any and all  payments by the Borrower to or for the account of
     any Bank or the Agent  hereunder  or under any Note  shall be made  without
     deduction  for any Taxes or Other  Taxes;  provided  that,  if the Borrower
     shall be  required  by law to deduct any Taxes or Other Taxes from any such
     payments,  the sum payable  hereunder  or under any Note to any Bank or the
     Agent,  (i) the sum payable  shall be  increased as necessary so that after
     making  all  required  deductions   (including   deductions  applicable  to
     additional  sums payable under this Section) such Bank or the Agent (as the
     case may be) receives an amount equal to the sum it would have received had
     no such deductions been made, (ii) the Borrower shall make such deductions,
     (iii) the  Borrower  shall pay the full  amount  deducted  to the  relevant
     taxation authority or other authority in accordance with applicable law and
     (iv) the Borrower shall furnish to the Agent, at its address referred to in
     Section  8.01,  the  original or a certified  copy of a receipt  evidencing
     payment thereof.

              (c) In addition, the Borrower agrees to pay all Other Taxes.

              (d) The Borrower  agrees to indemnify  each Bank and the Agent for
     the full amount of Taxes or Other Taxes (including, without limitation, any
     Taxes or Other Taxes  imposed or asserted  by any  jurisdiction  on amounts
     payable under this Section) paid by such Bank or the Agent (as the case may
     be) and any liability (including penalties,  interest and expenses) arising
     therefrom  or with  respect  thereto.  This  indemnification  shall be paid
     within  15 days  after  such  Bank or the  Agent (as the case may be) makes
     demand therefor.

              (e) Each Bank organized  under the laws of a jurisdiction  outside
     the United States, on or prior to the date of its execution and delivery of
     this  Agreement  in the case of each  Bank  listed on the  signature  pages
     hereof  and on or prior to the date on which it  becomes a Bank in the case
     of each  other  Bank,  and from time to time  thereafter  if  requested  in
     writing by the  Borrower  (but only so long as such Bank  remains  lawfully
     able to do so),  shall  provide the  Borrower  and the Agent with  Internal
     Revenue  Service form 1001 or 4224, as  appropriate,  or any successor form
     prescribed by the Internal  Revenue  Service,  certifying that such Bank is
     entitled to benefits  under an income tax treaty to which the United States
     is a party which  exempts the Bank from United  States  withholding  tax or
     reduces the rate of withholding tax on payments of interest for the account
     of such Bank or  certifying  that the income  receivable  pursuant  to this
     Agreement is effectively  connected with the conduct of a trade or business
     in the United States.  If the form provided by a Bank at the time such Bank
     first becomes a party to this Agreement  indicates a United States interest
     withholding tax rate in excess of zero,  withholding tax at such rate shall
     be considered  excluded  from "Taxes" as defined in subsection  (a) of this
     Section.

              (f) For any  period  with  respect  to which a Bank has  failed to
     provide the  Borrower or the Agent with the  appropriate  form  pursuant to
     subsection  (d) of this Section  (unless such failure is due to a change in
     treaty,  law or regulation  occurring  subsequent to the date on which such
     form  originally  was  required  to be  provided),  such Bank  shall not be
     entitled to  indemnification  under  subsection  (b) or (c) of this Section
     with  respect to Taxes  imposed by the United  States;  provided  that if a
     Bank,  which is  otherwise  exempt  from or  subject  to a reduced  rate of
     withholding tax, becomes subject to Taxes because of its failure to deliver
     a form required hereunder,  the Borrower shall take such steps as such Bank
     shall reasonably request to assist such Bank to recover such Taxes.

              (g) If the  Borrower is required to pay  additional  amounts to or
     for the account of any Bank pursuant to this  Section,  then such Bank will
     change the  jurisdiction  of its Lending Office if, in the judgment of such
     Bank, such change (i) will eliminate or reduce any such additional  payment
     which may  thereafter  accrue and (ii) if such  change,  in the judgment of
     such Bank, is not otherwise disadvantageous to such Bank."

              8. Amendment of Section 3.01(j) of the Agreement.  Section 3.01(j)
of the  Agreement  is hereby  amended by  changing  "General  Counsel"  to "Vice
President-Counsel".

              9. Amendment of Section 3.02 of the Agreement. Section 3.02 of the
Agreement is hereby amended by: (A) changing the period at the end of clause (d)
to "; and"; (B) adding the following clause after clause (d):

              "(e)  the  ability  of the  Borrower  to  obtain  bonding  for new
     construction  projects  shall not be less than or more  limited than at the
     date hereof;

              (f) the payment by the Borrower of all amounts theretofore payable
     pursuant to Section 9.03 within seven days of demand; and

              (g) at any time on or after March 8, 1996, receipt by the Agent of
     (i)  evidence of recording of the  Mortgages  on the  Mortgaged  Facilities
     described in Items 13 and 15 in Schedule  III and (ii)  opinions of counsel
     in each jurisdiction in which the foregoing  Mortgages are recorded in form
     and substance  satisfactory  to the Agent  covering  such matters  relating
     thereto as the Required Banks may reasonably request; and

              (h) at any time on or after March 28,  1996,  receipt by the Agent
     of a policy of title  insurance  with respect to each  Mortgage and Deed of
     Trust relating to the Mortgaged  Facilities  described as Items 1, 2, 3, 4,
     5,  6, 9 and  13 in  Part  I of  Schedule  III,  insuring  the  perfection,
     enforceability  and first  priority of the Lien created under such Mortgage
     or Deed of Trust,  as the case may be, as a valid first mortgage or deed of
     trust  Lien,  as the case may be,  on the  Mortgaged  Facilities  described
     therein,  in  form  and  substance  satisfactory  to the  Agent  and in the
     respective  amounts specified in Part I of Schedule III (with all premiums,
     expenses and fees paid or caused to be paid by the Borrower), each of which
     policies shall (i) be issued by a title company reasonably  satisfactory to
     the Agent,  (ii) have been  supplemented  by such  endorsements as shall be
     requested  by  the  Agent  (including,  without  limitation,   endorsements
     relating to usury,  revolving credit,  doing business and restrictions) and
     (iii)  contain  only  such  exceptions  to title  as  shall  be  reasonably
     satisfactory to the Agent,  provided that the parties hereto agree that the
     Permitted  Liens  (excluding  for  this  purpose   Permitted   Encumbrances
     described in clause (c) of the definition  thereof unless  satisfactory  to
     the Agent) constitute satisfactory exceptions to title.

and (C) changing  the phrase "(c) and (d)" in the last  sentence of such Section
to "(c), (d), (e) and (f)".

              10.  Amendment of Section 4.02 of the  Agreement.  Section 4.02 of
the Agreement is hereby  amended by: (A) adding "(a)" at the beginning  thereof;
and (B) by adding the following at the end thereof:

              "(b) The  execution,  delivery and  performance by each Obligor of
     the amendments dated as of February 26, 1996 to the Financing  Documents to
     which it is a party and the  performance  by each Obligor of the  Financing
     Documents  as so amended are within its  corporate  powers,  have been duly
     authorized by all necessary  corporate  action,  require no action by or in
     respect of, or filing with, any governmental  body,  agency or official and
     do not  contravene,  or  constitute  a  default  under,  any  provision  of
     applicable  law or regulation or of the  certificate  of  incorporation  or
     by-laws of such Obligor or of any agreement,  judgment,  injunction, order,
     decree  or  other  instrument  binding  upon  such  Obligor  or  any of its
     Subsidiaries  or result in the creation or imposition  of any Lien,  except
     Liens created by the  Collateral  Documents as so amended,  on any asset of
     such Obligor or any of its Subsidiaries."

              11.  Amendment of Section 4.03 of the  Agreement.  Section 4.03 of
the Agreement is hereby  amended by: (A) adding "(a)" at the beginning  thereof;
(B) adding the following after the second sentence of subsection (a):

     "The Borrower Security Agreement and the Subsidiary Pledge Agreement,  when
     executed and delivered in accordance with the Bridge Credit Agreement, will
     constitute  valid and binding  agreements  of each  Obligor  party  thereto
     enforceable  against each such Obligor in accordance with their  respective
     terms.  Each  amendment  to each  Financing  Document,  when  executed  and
     delivered  in  accordance  with  the  Bridge  Credit  Agreement,  and  each
     Financing  Document  as so  amended  will  constitute  a valid and  binding
     agreement  of the  Obligor  party  thereto  in  each  case  enforceable  in
     accordance with its terms."

              (C) adding at the end of subsection (a) the following:

              "(b)  All  real  property  in  which  the  Borrower  or any of its
     Subsidiaries  has an interest,  directly or indirectly  (whether through an
     interest in a joint venture or partnership or otherwise) are listed in Part
     1 of Schedule III hereto. The list of personal property of the Borrower and
     each of its  Subsidiaries,  security  interests  in which are  governed  by
     Article IX of the UCC as in effect in the relevant jurisdictions, set forth
     in Part 2 of Schedule III hereto is complete in all material respects.  The
     location,  ownership,  status and lien information provided in Schedule III
     for each item of real  property  and each  type of  personal  property  are
     complete and correct.

              (c) The"

(D) deleting "Subject to Section 2.17, the" in subsection (c); and (E) adding ",
as amended by the  amendments  thereto  dated as of February 26,  1996,"  before
"create valid" in subsection (c).

              12.  Amendment of Section 4.08 of the  Agreement.  Section 4.08 of
the Agreement is hereby amended by changing the date of "1986" to "1989".

              13.  Amendment of Section 4.09 of the  Agreement.  Section 4.09 of
the  Agreement  is hereby  amended  by adding  the  following  before  the first
sentence thereof:

     "All of the Borrower's Subsidiaries and all joint ventures and partnerships
     in which the Borrower or any of its Subsidiaries have an interest as of the
     date hereof are listed in Schedule VI hereto and the state of incorporation
     or  organization  and the  ownership  interest  of each  thereof  specified
     therein are complete and correct."

              14.  Amendment of Section 4.11 of the  Agreement.  Section 4.11 of
the  Agreement  is hereby  amended by: (A) adding at the end of the caption ; No
Derivatives  Obligations;  Certain Existing Agreements";  (B) adding "(a)" after
the  caption;  and (C) by  adding  the  following  subsection  at the end of the
section:

              "(b) Neither the Borrower nor any of its  Subsidiaries is party to
     any Derivatives Obligation except the Rincon swap.

              (c)  All  agreements  to  which  the  Borrower  or any  Subsidiary
     Guarantor  is a party or by which it is  bound  (other  than the  Financing
     Documents) containing a negative pledge or limitations on its incurrence of
     Debt or sale of assets are listed on Schedule IV hereto."

              15.  Amendment of Section 5.01 of the  Agreement.  Section 5.01 of
the  Agreement  is hereby  amended  by: (A)  adding  "(1)" at the  beginning  of
subsection (b) and adding the following at the end of subsection (b):

              "(2) as soon as  available  and in any event  within 45 days after
     the end of each quarter of each fiscal year of Perini Land and Development,
     a cash flow statement for Perini Land and Development for such quarter in a
     format  consistent  with the format of the cash flow  statement  for Perini
     Land and  Development  for the quarter ended  December 31, 1995  previously
     delivered to the Banks;"

(B) changing the letter  designation of clause (k) to "(n)";  and (C) adding the
following new clauses (k), (l) and (m):

             
              "(k)  prompt  notice of any  change in the  Borrower's  ability to
     obtain bonding for new construction  projects (including without limitation
     a reduction in the amount of bonding  commitments of any bonding company to
     the Borrower and any restrictions on use of such commitments);

              (l) prompt  notice of any  decision by the  Borrower or any of its
     Subsidiaries  not to meet a capital call by any joint  venture in which the
     Borrower or any such Subsidiary is participating;

              (m) prompt notice of the Borrower's or any Subsidiary's  obtaining
     or increasing an interest in a joint venture or partnership  which,  in the
     case of any construction joint venture,  need not be given until reasonably
     promptly  after a bid by such joint  venture  for a  construction  contract
     shall have been accepted; and"

              16.  Amendment of Section 5.02 of the  Agreement.  Section 5.02 of
the Agreement is hereby amended by: (A) adding "; No Derivatives Obligations" in
the caption;  (B) adding "(a)" after the caption;  and (C) adding the  following
subsection at the end of subsection (a):

              "(b)  The  Borrower  will  not,  nor  will  it  permit  any of its
     Subsidiaries  to, become a party to any Derivatives  Obligation  except the
     Rincon swap."

              17.  Amendment of Section 5.06 of the  Agreement.  Section 5.06 of
the Agreement is hereby amended by adding at the end thereof:

     ";  provided  that in any  event the  Borrower  shall  hold a  meeting  for
     representatives  of the Banks at least once each fiscal quarter,  at a time
     and place in  Framingham,  Boston or New York City to be  determined by the
     Agent on 10 Business Days' notice, for purposes of holding such discussions
     with such of the  Borrower's  officers,  employees and  independent  public
     accountants as the Agent shall  designate at the reasonable  request of any
     Bank."

              18.  Amendment of Section 5.08 of the  Agreement.  Section 5.08 of
the Agreement is hereby  amended by: (A) revising  subsection (a) to read in its
entirety as follows:

              "(a) After the date hereof,  the Borrower will not incur or suffer
     to exist any Debt other than (i) Debt  existing  on  December  31, 1995 and
     listed on  Schedule I hereof,  (ii) Debt under this  Agreement,  (iii) Debt
     under the Bridge  Credit  Agreement,  (iv) Debt owing to joint  ventures in
     which  the  Borrower  is  participating,  (v) up to  $3,000,000  of Debt to
     finance insurance premiums, (vi) Debt owing by the Borrower to a Subsidiary
     and evidenced by an intercompany note pledged to the Agent under the Pledge
     Agreement and (vii) any refinancing, extension, renewal or refunding of the
     Debt  referred to in clauses (i)  through (v) above;  provided  that in any
     event at no time shall Modified Parent Company Debt exceed $150,000,000 and
     at no time  shall  the  aggregate  outstanding  amount  of Debt to  finance
     insurance  premiums and any  refinancing,  extension,  renewal or refunding
     thereof exceed $3,000,000."

and (B) revising subsection (b) to read in its entirety as
follows:

              "(b)  After the date  hereof,  the  Borrower  will not  permit any
     Subsidiary  to  incur or  suffer  to exist  any  Debt  other  than (i) Debt
     existing  on December  31, 1995 and listed on Schedule I hereof,  (ii) Debt
     under  the  Subsidiary  Guarantee  Agreement,  (iii)  Debt  owing  to joint
     ventures in which such  Subsidiary is  participating,  (iv) Debt owing by a
     Subsidiary to the Borrower and evidenced by an intercompany note pledged to
     the Agent under the Borrower  Security  Agreement and (vi) any refinancing,
     extension,  renewal or  refunding  of the Debt  referred  to in clauses (i)
     through (iv) above."

              19.  Amendment of Section 5.09 of the  Agreement.  Section 5.09 of
the Agreement is hereby amended by: (A) changing  "1993" to "1996" both times it
appears in the second  sentence;  and (B) revising the third sentence to read as
follows:

     "For purposes of this Section,  "Base Compliance  Amount" means (i) for any
     date  during  the  period  from  and  including  December  31,  1995 to but
     excluding June 30, 1996, $100,000,000,  (ii) for any date during the period
     from and  including  June 30, 1996 to but  excluding  September  30,  1996,
     $105,000,000,  (iii) for any date  during  the  period  from and  including
     September 30, 1996 to but excluding December 31, 1996,  $112,000,000,  (iv)
     for any date during the period from and including  December 31, 1996 to but
     excluding  March 31,  1997,  $125,000,000  and (v) for any date  during the
     period  from  and  including  March  31,  1997  to  the  Termination  Date,
     $125,000,000 plus 50% of Consolidated Net Income during such period without
     giving effect to any negative amount of Consolidated  Net Income during any
     fiscal quarter or fiscal year during such period."

              20.  Amendment of Section 5.10 of the  Agreement.  Section 5.10 of
the Agreement is hereby amended to read in its entirety as follows:

     "Consolidated  Earnings  Before  Interest and Taxes for each fiscal  period
     specified  below shall be not less than the percentage  specified  below of
     Consolidated Interest Charges for such fiscal period:

              quarter ending March 31, 1996                          300%
              two quarters ending June 30, 1996                      300%
              three quarters ending September 30, 1996               250%
              four quarters ending December 31, 1996                 250%
              four quarters ending each March 31,
                June 30, September 30 and December 31
                thereafter                                           200%"

              21. Amendment of Section 5.11(i) of the Agreement. Section 5.11 is
hereby amended by: (A) relettering clause (i) as clause (k) and (B) adding after
clause (h) the following:

              "(i) Liens  (whether  statutory,  by contract or at common law and
     whether in the  nature of a  security  interest  or  constructive  trust or
     otherwise) of subcontractors,  architects,  engineers, surveyors, laborers,
     materialmen,  bonding  companies  and  other  Persons  performing  labor or
     services  or  providing  material  for  construction  projects in and under
     construction  contracts to which the Borrower or any of its Subsidiaries is
     a party as  general  or prime  contractor,  subcontractor  or  construction
     manager;

              (j) Liens granted to Fidelity and Deposit Company of Maryland (the
     "Bonding  Company") to secure  amounts  owing by the Borrower or any of its
     Subsidiaries in connection with surety bonds,  undertakings and instruments
     of guarantee issued by the Bonding Company on behalf of the Borrower or any
     of its Subsidiaries in the ordinary course of their respective  businesses;
     and"

              22.  Amendment of Section 5.12 of the  Agreement.  Section 5.12 of
the  Agreement is amended by: (A)  revising the proviso in the last  sentence of
subsection (a) to read in its entirety as follows:

     "provided  that  the  foregoing  shall  not  prohibit  (i)  any  Subsidiary
     Guarantor  from selling,  leasing or otherwise  transferring  assets in the
     ordinary  course  of  its  business  or  (ii)  R.  E.  Dailey  &  Co.  from
     transferring all of its assets to Perini Building Company."

(B) revising subsection (b) to read in its entirety as follows:

              "(b)  The  Borrower  will  not,  and will  not  permit  any of its
     Subsidiaries to, sell, lease or otherwise dispose of any item of Collateral
     (except  Accounts,  Inventory and items listed in Schedule VII hereto up to
     the  amounts  specified  therein)  unless (i) each of the Banks  shall have
     given its prior written consent thereto and (ii) the consideration therefor
     (x)  shall be at least  equal to the fair  market  value of such  asset (as
     determined in good faith by a financial officer of the Borrower or, if such
     value exceeds  $15,000,000,  by the board of directors of the Borrower or a
     duly  constituted  committee  thereof) and (y) in the case of any agreement
     entered into on or after the Effective Date of the Bridge Credit  Agreement
     for the sale,  lease or other  disposition  of Collateral  shall consist of
     cash payable at closing;  provided  that the prior  written  consent of the
     Required  Banks  shall  not be  required  for  any  sale,  lease  or  other
     disposition  of any item of  Collateral  having  a fair  market  value  not
     exceeding  $100,000 if the aggregate amount of the fair market value of all
     such items of Collateral sold,  leased or otherwise  disposed of during any
     fiscal year does not exceed  $500,000 and the Borrower  delivers to each of
     the  Banks  prompt  written  notice  of each  such  sale,  lease  or  other
     disposition."

              23. Amendment of Section 5.14 of the Agreement. The first sentence
of Section  5.14 of the  Agreement  is hereby  amended  by adding the  following
proviso at the end thereof:

     "; provided  that the Borrower will not declare or pay any preferred  stock
     dividend  while (i) any  Bridge  Commitment  or Bridge  Letter of Credit is
     outstanding  or any  Bridge  Loan or  Bridge  Reimbursement  Obligation  is
     outstanding  or (ii) any  Default  is  continuing  or (iii)  the  aggregate
     outstanding  amount of the  Borrower's  Debt exceeds 50% of the  Borrower's
     Consolidated Tangible Net Worth."

              24. Amendment of Section 6.01(n) of the Agreement. Section 6.01(n)
of the Agreement is hereby amended by deleting "subject to Section 2.17,".

              25.  Amendment of Section 7.01 of the  Agreement.  Section 7.01 of
the Agreement is hereby amended by adding at the end thereof the following:

     "Each Bank which is also an Other LC Bank or a Mortgage Bank also makes the
     foregoing  appointment  in its  capacity  as an Other LC Bank or a Mortgage
     Bank,  as the case may be, and agrees that the  provisions  of this Article
     VII, including without limitation  Sections 7.05 and 7.06, shall be for the
     benefit of the Agent mutatis  mutandis when acting in respect of such Other
     LC Bank or Mortgage Bank, its Other  Reimbursement  Obligations,  its Other
     Letters of Credit or its Other Mortgage/Lease Obligations."

              26.  Amendment of Section 9.04 of the  Agreement.  Section 9.04 of
the Agreement is hereby amended by adding at the end of the proviso in the first
sentence  "or under the Bridge  Credit  Agreement  and nothing in any  Financing
Documents shall require any Bank to share any payments  received by such Bank if
such  payments  were  made in  respect  of any  obligations  (including  without
limitation Other Reimbursement Obligations and Other Mortgage/Lease Obligations)
not constituting Loans or Reimbursement Obligations."

              27.  Amendment of Section 9.05 of the  Agreement.  Section 9.05 of
the Agreement is hereby amended by adding at the end thereof:

     ", (vii) amend  Section 9.04 or 9.06 hereof or (viii)  notwithstanding  any
     provision of any Collateral  Document to the contrary,  release any item of
     Collateral from the Lien provided by the Collateral  Documents,  except for
     the sale or other  disposition of such item by the Agent in the exercise of
     its rights as provided  therein  (provided  that unless an Event of Default
     has occurred and is continuing, the Agent may release any Collateral at the
     request of the Borrower,  without the consent of each of the Banks,  if (i)
     such  release  is  required  in  connection  with any sale,  lease or other
     disposition  of  such  Collateral  and  (ii)  such  sale,  lease  or  other
     disposition  is in  accordance  with  and  permitted  by the  terms  hereof
     (including without limitation  Sections  2.10(b)(i) and 5.12(b)) and of the
     Bridge Credit Agreement)."

              28.  Amendment of Section 9.06 of the  Agreement.  Section 9.06 of
the  Agreement  is amended  by: (A) adding "in amounts of at least the lesser of
its  Commitment  and  $5,000,000" at the end of the first sentence of subsection
(b) and after "or a proportionate part" in the first sentence of subsection (c);
(B) adding "or another Bank" after "transferor Bank" in the proviso to the first
sentence  of  subsection  (c);  and (C)  changing  "Exhibit I" to "Exhibit K" in
subsection (c).

              29. Amendment of Schedules to the Agreement.  The Schedules to the
Agreement are hereby deleted and Schedules I to VII in the form attached  hereto
are added to the Agreement.

              30. Amendment of Table of Contents of the Agreement.  The Table of
Contents  of the  Agreement  is hereby  amended as  appropriate  to reflect  the
foregoing amendments.

              31. Consent to Other  Financing  Documents and Amendments of Other
Financing Documents.  Each Bank hereby consents to the execution and delivery of
the Borrower Security Agreement, the Borrower Pledge Agreement,  Amendment No. 1
to the Subsidiary Guarantee Agreement, the Subsidiary Security Agreement and the
Subsidiary Pledge Agreement.

              32.  Representations  and Warranties.  The Borrower represents and
warrants that the  representations  and warranties of each Obligor  contained in
each Financing  Document,  as amended, to which it is a party are true on and as
of the date hereof.

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

              34. Counterparts;  Effectiveness.  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.
This Amendment shall become effective as of the date hereof when the Agent shall
have received duly executed  counterparts  hereof signed by the Borrower and the
Required Banks (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).

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

                                        PERINI CORPORATION


                                        By /s/ David B. Perini
                                           Title: President & CEO


                                        By /s/ John H. Schwarz
                                           Title: Executive Vice President



                                        MORGAN GUARANTY TRUST COMPANY
                                        OF NEW YORK


                                        By /s/ D. Linda Scheuplein
                                           Title: Vice President



                                        FLEET NATIONAL BANK OF
                                        MASSACHUSETTS
                                        (f/k/a SHAWMUT BANK, N.A.)

                                        By /s/ Lisa S. Coney
                                           Title: Vice President 



                                        BANK OF AMERICA NATIONAL TRUST AND 
                                        SAVINGS ASSOCIATION


                                        By /s/ Donald J. Chin
                                           Title: Vice President



                                        BAYBANK, N.A.,
                                        as Bank and as LC Bank


                                        By /s/ Timothy M. Laurion
                                           Title: Vice President



                                        COMERICA BANK


                                        By /s/ Angela B. Petersen
                                           Title: First Vice President



                                        HARRIS TRUST & SAVINGS BANK


                                        By /s/ Sandra J. Sanders
                                           Title: Vice President



                                        STATE STREET BANK AND TRUST COMPANY


                                        By /s/ Linda M. Moulton
                                           Title: Vice President 



                                        MORGAN GUARANTY TRUST COMPANY 
                                        OF NEW YORK, as Agent


                                        By /s/ D. Linda Scheuplein
                                           Title: Vice President