This case in large degree is similar to the case of Chas. T. Main, Inc. (Main) v. Massachusetts Turnpike Authority (the authority), ante, 154. The facts giving rise to the principal issues, and the findings by the same auditor and the same trial judge, are very much alike. Accordingly, to avoid duplication, in general only facts which differ significantly from those in the Main case will be set out here.
The case is here on a consolidated outline bill of exceptions in which the authority presents much the same exceptions presented by it in the Main case. Fay, Spofford & Thorndike, Inc. (Fay), also presents exceptions to certain rulings given at the request of the authority.
Fay by a contract dated June 22, 1954, for engineering services, similar1 to that in the Main case, was made section engineer of sections I and J of the turnpike. The auditor found, as in the Main case, that when this “contract was executed, both parties anticipated that the turnpike would be open for traffic on November 15,1956,” and that neither Fay nor the authority ‘ ‘ contributed to the delay in the opening . . . until May 15, 1957.” He concluded that, if Fay “is not precluded by the terms of its contract from recovering for additional services,” it is entitled to recover the fair value ($97,138.15) of additional services rendered after November 15, 1956, with interest from June 2, 1958. He stated also that there was no evidence to sustain any allegation that the authority “deliberately and arbitrarily extended the time for the opening . . . beyond . . . November 15, 1956,” and that both Fay and the authority “acted in good faith.”
It was admitted that the authority owes Fay, “a balance of at least $68,342.90 for its services both in the design and construction phases.” This amount had been retained by *171the authority under the provisions of art. 8 of the contract. See the Mam case, fn. 4. The auditor found the correct amount of the retainages to be $69,430.74, and that Fay was entitled to receive this amount with interest from June 2, 1958. The auditor took the view that the contract obliged the authority to make final determination of the cost of construction “within a reasonable time after it had been furnished with the information necessary to make the determination,” and that the authority had not been given “the right to make its determination at any time it sees fit, however late that time may be.”
The trial judge, on the basis of the auditor’s report and certain documentary evidence, found that Fay was owed $97,138.15, with interest from June 2, 1958, for additional services and $69,430.74, also with interest from June 2, 1958, for unpaid retainages from the contract fees.
A. The Claim pob Additional Compensation.
We perceive nothing in the facts found by the auditor or in the documentary evidence before the judge which would warrant any result in this case different from that reached in the Main case with respect to the claim for additional compensation. The contract provisions do not permit any different result, for the reasons stated in the Main case.
Accordingly, the authority’s requests for rulings numbered 1, 8, 9, 10, 13, and 14 (which are the same as the like numbered requests in the Main case) were improperly denied and the authority’s exceptions to the denial of these rulings are sustained. The trial judge correctly gave the rulings requested by the authority to which Fay claimed exceptions. These exceptions are overruled. Judgment is to be entered for the authority on all counts seeking additional compensation.
B. The Retainage Intebest Claim.
The authority does not argue that the amount ($69,430.74) of the retainages found by the auditor was incorrect. The authority does dispute the allowance of interest upon this *172amount from June 2, 1958. The pertinent dates with respect to each of the four contracts let for construction of sections I and J of the turnpike are set out in the margin.2 On July 11,1957, Fay “turned over to the . . . [authority] all of its field books relating to the four . . . contracts . . . and on July 31, 1957 . . . requested payment for its services .... On December 20, 1957 . . . [Fay] forwarded the so called ‘as-built’ plans . . On December 23,1957, the authority’s general engineering consultant approved these plans. On June 2, 1958, Fay wrote to the authority “enclosing a statement of its engineering services.” This letter ‘ ‘ states that it is based on final construction cost estimates and final cost of utilities ‘as recently approved.’ ” Nearly seventeen months later (on October 22, 1959) the value of the last of the construction contracts was accepted by the authority’s hoard.
The auditor concluded that interest was due from the date of Fay’s statement (June 2,1958) and that “final payment . . . was withheld for a period beyond what was reasonable.” The obvious purpose of the provision in the contract (art. 8, see the Main case, fn. 4) for the retainages, viz. preventing an overpayment to Fay, could not justify this delay of nearly seventeen months after the authority had the information necessary to make its determination. The auditor found no facts which tended to suggest that the delay was reasonable or proper.
This phase of the ease is governed by onr discussion and conclusions in the Main case with respect to the retainage interest claim in that case. There was no error of law in the denial of the authority’s motion to strike the portions of the auditor’s report allowing interest on the retainages *173from June 2, 1958. The rulings concerning this claim, requested by the authority, were given. The authority’s exceptions dealing with this interest claim are overruled.
Conclusion.
The case is remanded to the Superior Court for further proceedings consistent with this opinion.
So ordered.
The contract contained in substantially the same form arts. 2, 3 (e), 4, 5, 6, 7, 8, 9, and 20, and incorporated by reference the same specifications for section engineer’s services. See references to these articles in the opinion in the Main case, especially fns. 2, 3, 4, 5, and 6. The standard specifications of the authority, i.e. the basic construction contract, were also the same. See the Main case, especially £n. 7.
This table summarizes certain pertinent findings of the auditor.
Contract Completion Date in Contract Date of Substantial Completion Date of ¡Final Determination No. (all 1956) Completion Date of Cost 51-070 July 31 Get. 9, 1956 Dec. 8, 1956 Mar. 5, 1959 51-071 July 3-1 Dee. 6, 1956 July 6, 1957 Oct. 22, 1959 51-072 Aug. 31 Apr. 30, 1957 July 6, 1957 Oct. 22, 1959 51-073 Aug. 31 Aug. 31, 1956 Oct. 31, 1956 May 9, 1957