A controversy between the plaintiff-appellant, Town of Pelham, and the defendant-respondent, City of Mount Vernon, was submitted to the Appellate Division on an agreed statement of facts. (Civ. Prac. Act, §§ 546-548.) Upon that submission a nonunanimous order of the Appellate Division directed judgment in favor of the plaintiff. The case comes to us upon appeal by the defendant as of right.
In those circumstances, the scope of our review is limited to the stipulated facts and no others. (Manhattan Stor. & Warehouse Co. v. Movers Assn., 289 N. Y. 82, 86.) Stated otherwise: we may determine legal consequences flowing from the agreed facts but in so doing we may not find additional facts — i c * # * even if the submitted facts logically and reasonably admit of further important inferences which a trier of the fact might very well draw. ’ ’ (Cohen v. Manufacturers Safe Deposit Co., 297 N. Y. 266, 269; and see Feist v. Fifth Ave. Bank, 280 N. Y. 189, 190; Title Guar. & Trust Co. v. Mortgage Comm., 271 N. Y. 302, 305.)
The question presented for determination is the share each of the two litigants must pay to meet the cost of maintenance and repair of a bridge which now connects those two municipalities.
As to agreed facts: The bridge involved spans the Hutchinson River (Eastchester Creek) — a navigable ,stream — at a point in Westchester County where that stream forms the boundary line between the Town of Pelham and the City of Mount Vernon. The bridge also serves to connect two highways — South Fulton Avenue in the City of Mount Vernon and Pel*19ham Parkway in the Town of Pelham — each of which highways leads to the Hutchinson River. In 1900, pursuant to statutory provisions then effective, the two municipalities built a bridge over the Hutchinson River which was condemned in 1911 by the United States War Department. Thereafter, in the same year, a petition, signed by not less than twenty-five taxpayers, was presented to the Board of Supervisors of the County of Westchester requesting the county to construct a new bridge. Thereupon the Board of Supervisors adopted a resolution that such bridge be constructed, and in 1913 the United States Secretary of War authorized the construction of a county bridge over the Hutchinson River between the Town of Pelham and the City of Mount Vernon.
On January 28, 1914, the Westchester County Board of Supervisors by formal resolution authorized the presentation to the Legislature of an amendment to section 61 of the County Law which would provide that where a county constructs a bridge over a stream which is the boundary line between two municipalities, the latter may agree with the county to maintain such bridge jointly, in proportion to the assessed valuation of the municipalities. On March 30,1914 — before the amendment to section 61 of the County Law (L. 1914, ch. 233, eff. April 8, 1914) became effective — the Common Council of the City of Mount Vernon adopted a resolution providing in part: “ Resolved * * * that in the event of a bridge being constructed over the navigable inlet from Long Island Sound, separating the City of Mount Vernon from the Town of Pelham * * * at the expense of the County of Westchester, that the City of Mount Vernon will upon the construction and completion thereof assume the care and management of such bridge in conjunction with the Town of Pelham, and will pay its proportionate share of the expenses of the care and maintenance of said bridge thereafter.”
On April 1, 1914 — before the 1914 amendment to section 61 of the County Law became effective — the Town Board of Pelham adopted a resolution providing in part:
“ Whereas an amendment to Section 61 of the County Law has been enacted by the Legislature of this state, permitting municipalities to contract with counties for the maintenance and repair of bridges built at County expense; and
*20“ Whereas the Board of Supervisors of Westchester County now propose to build said bridge * * * upon the consideration and condition that said municipalities of Mount Vernon and Pelham enter into a contract with the County of Westchester for the maintaining and repairing of said bridge after completion ;
"Now therefore, be it resolved: That the Supervisor and Town Clerk of Pelham be and hereby are authorised to execute such an agreement on behalf of the Town of Pelham.” (Emphasis supplied.)
By chapter 233 of the Laws of 1914, the Legislature amended section 61 of the County Law — effective April 8, 1914 — to provide in part as follows: “ * * * In case the bridge is constructed over a stream forming the boundary line between two towns or two cities or between a town and city, then they may agree with the county to operate and maintain such bridge jointly, in proportion to the assessed valuation of such town or city. * * * ” (Emphasis supplied.)
On April 13, 1914, the Westchester County Board of Supervisors adopted a resolution which — after reciting that the above-mentioned amendment to section 61 of the County Law had become effective, and that the two municipalities “ have expressed their willingness to enter into an agreement to maintain and operate a bridge over the Hutchinson River ” in the event the county construct it — authorized the county to execute a contract for the construction of the bridge.
We think it clear that the two resolutions, last quoted above, adopted by the municipalities which are parties to this action, plus the extract from the resolution of April 13, 1914, by the Westchester County Board of Supervisors, indicate that, while the parties were authorised by such resolutions to execute some sort of an agreement with respect to the maintenance of the bridge, the resolutions did not themselves constitute such an agreement. Upon that subject the agreed facts contain the following statement: “ That no written agreement among the plaintiff, defendant and the County of Westchester pursuant to County Law, Section 61, has been located and neither party has any knowledge or information that any such instrument was ever executed or prepared.”
*21The agreed facts further show that the corporation counsel of Mount Vernon in 1910 and the town attorney of Pelham in 1914 rendered an opinion that each municipality was obligated to pay one half the cost of operation and maintenance of the bridge, and that thereafter — for a period of ‘‘ many years ’ ’ the plaintiff and defendant “ shared the cost of operation and maintenance of the new bridge in equal proportions. ’ ’ When repairs to the bridge were made .in 1923, 1932, 1938 and 1947 one half the cost thereof was paid by each municipality, pursuant to resolutions passed by their respective appropriate bodies. Likewise, when traffic lights were installed in 1945, the cost was shared equally by Mount Vernon and Pelham; and “ For many years ” the wages paid to bridge tenders who operated the bridge for twenty-four hours a day were paid in equal shares by the two municipalities.
Finally, there came a time in June, 1949, when the bridge was damaged, and “ extensive repairs ” were required to restore it. Then, for the first time, the Town of Pelham contended that the cost to the two municipalities for the expense of maintenance and repairs to the bridge should not be shared equally — as it had been shared for thirty-five years — but should be determined in proportion to the assessed valuation respectively of the two municipalities. The agreed facts advise us that the assessed valuation of property in the Town of Pelham is “ substantially less ” than property in the City of Mount Vernon.
As plaintiff in this action, the Town of Pelham contends it is entitled to judgment declaring that the bridge was built pursuant to section 61 of the County Law, and that it should share with the City of Mount Vernon the cost of maintenance and repairs thereof in proportion to the assessed valuation of property in each of the two municipalities. The relief sought by the Town of Pelham also includes its demand for an accounting by the City of Mount Vernon for past overpayments, if any, in excess of its proper share of the cost of maintenance and repair of the bridge since its construction, and that the defendant pay to the plaintiff the amount of such overpayments.
The defendant, City of Mount Vernon, contends that it is entitled to judgment declaring that, pursuant to section 232 of the Highway Law, the expense of maintaining the bridge and the cost of repairs thereto should be borne equally by the parties.
*22It was the view of a majority of the Appellate Division that — ‘ ‘ Although no formal contract was entered into by and between the county and the two municipalities with respect to maintenance costs, the resolutions quoted above must be held to be the agreements contemplated by section 61. The fact that thereafter the municipalities divided such costs equally between them does not preclude the plaintiff from maintaining this action and recovering from the defendant the amount paid in excess of its ratable share by way of contribution, the excess representing part of the obligation of the defendant.” (278 App. Div. 79, 84.) Having reached that conclusion, the Appellate Division by its order — the Presiding Justice dissenting — directed that, within limits fixed by the six-year Statute of Limitations, the plaintiff is entitled to judgment directing that the parties to this action share the cost of maintenance and repair of the bridge in proportion to the respective assessed property valuations and that plaintiff is entitled to recover the amount expended in excess of such share, with interest, and to have the defendant account therefor.
The following considerations have led us to a contrary conclusion: As already noted, the 1914 amendment to section 61 of the County Law (L. 1914, ch. 233) —upon which the Appellate Division decision rests — provides that two municipalities “ may agree with the county to operate and maintain such bridge jointly, in proportion to the assessed valuation of such town or city.” (Emphasis supplied.) Although, pursuant to that statute, the parties hereto could have entered into an agreement for the joint maintenance and repair of the bridge and thereby could have arranged for the assumption of the cost thereof in proportion to the assessed valuation of properties within their limits respectively, they have chosen consistently throughout a period of thirty-five years to do otherwise. In that connection it is significant that the agreed facts contain no statement that the payments made by the parties between 1914 and 1949, when they shared equally the cost of maintenance and repair of the bridge, were due to a mistake of either law or fact. In view of that circumstance, we may not infer that such payments — made on the basis of equality instead of being in accord with the formula prescribed by section 61 id.— were made as a *23result of mistake. (Cohen v. Manufacturers Safe Deposit Co., supra, p. 269; Matter of Morrissey v. New York State Employees’ Retirement System, 298 N. Y. 442, 450.) Thus by practical construction the parties to this action have demonstrated that they did not intend by contract to apportion the cost of maintenance and repair pursuant to the statutory formula mentioned above. There is distinguished authority for the simple statement —1 ‘ There is no surer way to find out what parties meant, than to see what they have done.” (Insurance Co. v. Dutcher, 95 U. S. 269, 273.)
Mindful of the fact that each of the 1914 resolutions — which a majority of the Appellate Division has construed to constitute an agreement contemplated by section 61 of the County Law — was adopted before April 8, 1914 (the effective date of the statute), we think the resolution of March 30, 1914, by the Common Council of the City of Mount Vernon amounts to no more than authorization by that body to the end that, upon completion by the County of Westchester of the bridge here involved, the city would assume the care and management of such bridge jointly with the Town of Pelham and would thereafter pay its proportionate share of the cost of such maintenance and repair. We also construe the resolution of April 1, 1914, by the Town Board of Pelham as being no more than an authorisation to the supervisor and the town clerk to execute an agreement for the maintenance and repair of such bridge after its completion by the County of Westchester. In our opinion, those 1914 resolutions, in and of themselves, do not constitute an agreement ‘ ‘ with the county ’ ’ as contemplated by section 61 of the County Law. Our conclusion in that regard is reinforced by the agreed fact, already noted, that “ no written agreement among the plaintiff, defendant and the County of Westchester pursuant to County Law, Section 61, has been located and neither party has any knowledge or information that any such instrument was ever executed or prepared.” There is nothing in the 1914 resolutions, nor in the agreed statement of facts which, in our view, justifies the plaintiff’s claim that since 1914 it had a contractual right to contribution by the City of Mount Vernon based upon the formula prescribed by section 61 id. The agreed facts, including as they do uniform and unquestioned acts of the *24parties over a long period of years when — although prompted by natural self-interest — they shared equally the cost of maintenance and repair of the bridge, has led us to a contrary conclusion. (See Carthage Tissue Paper Mills v. Village of Carthage, 200 N. Y. 1, 14; Morehouse v. Woodruff, 218 N. Y. 494, 502-503.)
Although the stipulated facts disclose no agreement between the parties hereto and the County of Westchester pursuant to section 61 of the County Law as amended in 1914, we think the equal apportionment of the cost of maintenance and repair — which apportionment they adopted and applied from 1914 to 1949 and involved payments voluntarily made for a lawful purpose — was sanctioned by section 250 (now § 232) of the Highway Law. That statute, which makes provision for meeting the cost of construction and maintenance of bridges over waters lying within townships or along any boundary thereof, provides in part: “ * * * When such bridges are constructed over streams or other waters forming the boundary line between a city of the third class and a town, such city and town shall be liable each to pay its just and equitable share of the expenses for the construction, maintenance and repair of such bridges. * * *
There is agreement that the City of Mount Vernon from 1914 to 1949 was a city of the third class. From that fact it follows, within the language of the statute last quoted above, that from 1914 to 1949 each of the parties to this action was liable to pay its “ just and equitable share ” of the cost of maintenance and repair of the bridge which spans a stream forming the boundary-line between the two municipalities. As the agreed facts do not advise us of objection by either municipality to the equal apportionment of expense which they chose to adopt from 1914 to 1949, we cannot say as a matter of law that such apportionment did not meet the statutory requirement of being “ just and equitable The division of such expense incurred since July, 1949 — when the Town of Pelham first refused to apply thereto the equal apportionment formula — may be the subject of agreement by the parties pursuant to section 131-b of the Highway Law (formerly County Law, § 61). An alternative statutory basis for sharing such expense is also made available by sections 232, 235 and 274 of the Highway Law.
*25Accordingly, the judgment of the Appellate Division should be reversed, without costs, and judgment ordered declaring that the parties hereto share equally the cost of maintenance and repair of the bridge involved, until such time as other provision therefor shall be made pursuant to statutes then applicable.