N.Y. High. Law § 206
When land sought to be acquired by the United States of America for the purpose of fortifications includes a highway or portion thereof, the condemnation proceedings may include such highways or portion thereof, and the people of the state of New York, any municipality, county or other party claiming an interest therein may be made a party defendant in such proceeding, and the interest of the state, county, municipality or other claimant be determined, and the award made therefor. Forthwith upon the acquisition by the United States of America of land which includes a highway or portion thereof, there shall be filed in the office of the town clerk of the town, and also in the office of the county clerk of the county, in which such land is located, certified copies of the record or transfer to the United States of such land, together with a map of such land, on which map such highway or portion thereof shall be indicated by metes and bounds, and thereupon such highway or portion thereof shall be deemed discontinued and abandoned for highway purposes, and if proceedings have been taken, pursuant to this chapter for the improvement of such highway by state aid, all such proceedings, together with any appropriation made for the improvement of such highway or portion thereof, as indicated on such map, shall be deemed revoked, vacated and set aside.
N.Y. High. Law § 206