N.Y. Highway Law Section 340-A
Designation of state interstate routes

State interstate routes are hereby set forth and generally described as follows: Interstate Route 501. Beginning at the New York City-Westchester county line north of Pelham Bay park, thence generally northeasterly through or in the vicinity of Mt. Vernon, New Rochelle and Rye, to the New York-Connecticut border in the vicinity of Port Chester, the foregoing route being a portion of the New York state thruway. Interstate Route 502. Beginning on the New York City-Westchester county line at the Major Deegan expressway, thence in a general northerly direction through Yonkers to interstate route connection 520 in the vicinity of Elmsford, the foregoing route being a portion of the New York state thruway, thence from interstate route connection 520 in the vicinity of White Plains in a general northerly direction to interstate route 503 in the vicinity of Brewster, excluding a short section through the western tip of Fairfield county, Connecticut, thence from interstate route 503 in the vicinity of Newburgh, continuing generally northerly passing through or in the vicinity of Kingston and Albany, intersecting interstate route 504 in the vicinity of Albany, the foregoing route between Newburgh and Albany being a portion of the New York state thruway, thence continuing in a general northerly direction crossing the Mohawk river on a new bridge to be constructed as part of this route, such bridge shall be designated and shall be known as the “Thaddeus Kosciuszko bridge”, and passing through or in the vicinity of Saratoga Springs, Glens Falls and Plattsburgh to the United States-Canada border in the vicinity of Champlain. In order to provide a continuous and uninterrupted interstate route section from the vicinity of White Plains to the vicinity of Brewster as aforesaid, the commissioner of transportation is authorized and empowered to enter into an agreement or agreements with the duly authorized representatives of the state of Connecticut in order to provide for the construction and maintenance of necessary connections between said interstate route 502 and an interstate route to be constructed through the said excluded section of interstate route 502 running through the western tip of Fairfield county, Connecticut. Interstate Route 503. Beginning at the Pennsylvania-New York border in the vicinity of Port Jervis, thence generally easterly, crossing the Hudson River in the vicinity of Newburgh and Beacon, to the New York-Connecticut border in the vicinity of Brewster. Interstate Route 504. Beginning on the Pennsylvania-New York border in the vicinity of Lake Erie, thence in a general northeasterly direction passing in the vicinity of Dunkirk, to the vicinity of Big Tree and generally northerly to the town of Cheektowaga, and continuing northerly to the vicinity of Williamsville and generally easterly through or in the vicinity of Batavia and Syracuse, intersecting interstate route 505 in the vicinity of Syracuse, continuing generally easterly passing through or in the vicinity of Oneida, Utica, Little Falls, Amsterdam and Schenectady to an intersection with interstate route 502 in the vicinity of Albany the foregoing route being a portion of the New York state thruway; thence in a general easterly direction through the city of Albany to an intersection with interstate route connection 540 in the vicinity of Lower Patroon Island, thence in a general southeasterly direction to a point on the Berkshire section of the New York state thruway in the vicinity of state highway five thousand eighty-four, as determined by the commissioner of transportation and the chairman of the New York state thruway authority, thence continuing along the New York state thruway to the New York-Massachusetts border, such interstate route to be designated, in addition to any other name or designation, as the “AMVETS Memorial Highway”. Interstate Route 505. Beginning at the Pennsylvania-New York border in the vicinity of Corbettsville, thence generally northerly through or in the vicinity of Binghamton, Cortland and Syracuse, intersecting interstate route 504 in the vicinity of Syracuse, continuing generally northerly through or in the vicinity of Watertown to the United States-Canada border in the vicinity of Grass Point Park, also continuing from a point on interstate route 505 north of Watertown and in a northeasterly direction to or in the vicinity of Massena, thence easterly and southeasterly passing in the vicinity of Malone, to a connection with interstate route 502 in the vicinity of Plattsburgh. Interstate Route 506. Beginning at interstate route 504 in the town of Cheektowaga, thence generally westerly and northwesterly through Buffalo, across Grand Island, the foregoing route being a portion of the New York state thruway, and thence generally westerly to the United States-Canada border in the vicinity of Lewiston; also including a connection beginning at the Peace bridge toll plaza, as determined by the commissioner of transportation, thence generally southwesterly and southerly to a point on the southbound lane of the Niagara section of the New York state thruway in the vicinity of Porter avenue, as determined by the commissioner of transportation and the chairman of the New York state thruway authority. Interstate Route 507. Beginning at the New Jersey-New York border in the vicinity of Suffern, Rockland county, thence in a general northwesterly direction to Delaware county, thence in a general westerly direction to the Pennsylvania line in the county of Chautauqua, along the southern section of New York State, following substantially what is now touring route 17. Interstate Route 508. Beginning at interstate route 505 in or near the city of Binghamton thence generally northeasterly within the Susquehanna river valley and through or near the city of Oneonta, thence continuing northeasterly through or in the vicinity of the city of Schenectady, to a connection with interstate route 502 in the vicinity of Latham. Interstate Route 509. Beginning at a point on the Southern Tier expressway in the vicinity of Avoca, thence generally northwesterly to the vicinity of Dansville and continuing generally northerly to interstate route connection 580 in the city of Rochester. New York City Routes and Connections. Interstate Route Connection 511. Cross Bronx expressway from George Washington bridge approach to Bruckner expressway. Bruckner expressway from Cross Bronx expressway to New England thruway, New England thruway from Bruckner expressway to Westchester county line. Interstate Route Connection 512. Staten Island expressway from Goethals bridge approach to Verrazzano-Narrows bridge approach, Brooklyn-Queens expressway from Verrazzano-Narrows bridge approach to Grand Central parkway, Grand Central parkway from Brooklyn-Queens expressway to Robert F. Kennedy bridge approach, Major Deegan expressway from Robert F. Kennedy bridge approach to the Westchester county line connecting with interstate route 502. Interstate Route Connection 513. Nassau expressway from Van Wyck boulevard to 150th street, Clearview expressway from Hillside avenue to Throgs Neck bridge approach, Throgs Neck expressway from Throgs Neck bridge approach to Bruckner expressway including Cross Bronx expressway from Throgs Neck expressway to Bruckner expressway. Interstate Route Connection 514. Queens-Midtown expressway from Brooklyn-Queens expressway to Queens boulevard, Horace Harding expressway from Queens boulevard to Clearview expressway. Interstate Route Connection 515. From Brooklyn-Queens expressway easterly to Northern boulevard in the vicinity of Grand Central parkway; Northern boulevard and Whitestone parkway from Grand Central parkway to Bronx-Whitestone bridge approach, including Van Wyck expressway from Horace Harding expressway northerly to Whitestone parkway, Hutchinson River expressway from Bronx-Whitestone bridge approach to Bruckner expressway. Interstate Route Connection 516. Bruckner expressway from Robert F. Kennedy bridge approach to Cross-Bronx expressway. Interstate Route Connection 517. Arthur V. Sheridan expressway from Bruckner expressway to Cross-Bronx expressway. Interstate Route Connection 518. West Side highway from Brooklyn-Queens expressway via Hugh L. Carey tunnel to the Lincoln tunnel, including a connection from the Lincoln tunnel to West Seventy-second street. In no event shall traffic by any type of motor vehicle used for commercial purposes, such as the transportation of goods, wares and merchandise including trailers and semi-trailers, and tractors when used in combination with trailers and semi-trailers, and motor coaches carrying passengers except taxicabs be permitted on this route north of Fifty-ninth street, and such commercial traffic shall exit from or enter on this route no further north than the connections or ramps to this route at Fifty-seventh street. Up State Connections. Interstate Route Connection 520. From interstate route 502 in the vicinity of Elmsford, generally easterly passing through or northerly of White Plains to a connection with interstate route 501 in the vicinity of Rye, including an interchange with interstate route 501, which interchange is to be maintained and constructed jointly by the department of transportation and the New York State thruway authority in a manner determined by the commissioner of transportation and the New York State thruway authority. The county of Westchester is hereby authorized to convey to the state of New York all the right, title, interest and option rights of the people of Westchester county in and to such parts of the lands, buildings and other real property and rights thereto acquired and held by it, as deemed necessary by the commissioner of transportation of the state of New York for purposes connected with an expressway known as interstate route connection 520 (Central Westchester highway-Cross Westchester expressway) from interstate route 502 in the vicinity of Elmsford in the town of Greenburgh to a connection with interstate route 501 in the vicinity of Rye, through and over the Tarrytown-White Plains parkway reservation, Central Westchester parkway reservation, Bronx river parkway reservation, Silver Lake park reservation, Mamaroneck river parkway reservation and Hutchinson river parkway reservation. Such conveyance is to be made upon the express condition and in express consideration of the agreement of the state of New York to construct and maintain at its own cost and expense, or with federal aid, interstate route connection 520 along such right of way as hereinabove described and to acquire at its own cost and expense, or with federal aid or by gift such additional property as may be required for such construction. The fee title to all property so conveyed shall vest in the people of the state of New York, subject to all restrictions, convenants, leases and easements of record, and subject to any state of facts an accurate survey may show as of the date of such conveyance. The people of the state of New York shall thereupon take possession of such property and hold and maintain the same in perpetuity at their own expense, or with federal aid, for highway purposes, and the people of the state of New York shall be the successor of such county as to the real estate acquired under the provisions of this section and shall have the same powers and duties with respect to its improvement, operation and maintenance as if the same had been originally acquired by the state for highway purposes. Nothing in this section shall be construed to limit the obligation of Westchester county to pay the principal and interest on any bonds heretofore issued by the county of Westchester for the acquisition of the land to be conveyed to the state pursuant to this section, nor to place any liability on the state of New York for any damages or injuries to person or property arising out of or incidental to the acquisition or ownership by Westchester county of such property, which shall have occurred prior to the date of such conveyance from the county of Westchester to the state of New York. Interstate Route Connection 525. Beginning at the New Jersey-New York border in the vicinity of Suffern, thence in a general easterly direction across the Hudson river in the vicinity of Nyack to interstate route 502, in the vicinity of Elmsford, said portion of the route between Suffern and Elmsford being a portion of the New York state thruway. Interstate Route Connection 530. From interstate route 502 in the vicinity of Kingston, generally southeasterly to the vicinity of the intersection of Albany avenue and Broadway in the city of Kingston. Interstate Route Connection 540. From interstate route 502, in the vicinity of Albany, the Village of Menands, and the city of Watervliet into the city of Troy in the vicinity of Hoosick Street and Seventh avenue. The bridge on such route spanning the Hudson river shall be designated and known as the “Collar City Bridge”. Interstate Route Connection 542. From interstate route 504 in the vicinity of the Albany north city line generally northerly and northwesterly to a connection with interstate route 502 in the vicinity of the Albany-Shaker road. Interstate Route Connection 550. From interstate route 504 south of Schenectady, northerly and westerly, passing through the city of Schenectady to interstate route 504 west of Schenectady. Interstate Route Connection 560. From interstate route 504 generally southwesterly to the vicinity of the intersection of the North-South Arterial and Oriskany Street in the city of Utica. Interstate Route Connection 570. From interstate route 504, southeasterly south of Onondaga Lake to the city of Syracuse, continuing southeasterly and easterly to an intersection with interstate route 571, continuing northerly to an intersection with interstate route 504, continuing northerly and westerly to interstate route 505 north of Syracuse. Interstate Route Connection 571. From Interstate Route 505 in the vicinity of the Syracuse south city line easterly and northerly to an intersection with Interstate Route Connection 570. Interstate Route Connection 575. From interstate route 505 in the vicinity of its intersection with touring route 68, generally westerly to a connection with arterial highway route 37 in the vicinity of the Ogdensburg-Prescott international bridge. Interstate Route Connection 580. From interstate route 504 west of Rochester, generally northeasterly to the city of Rochester, continuing northeasterly, easterly and southeasterly through the city of Rochester and continuing southeasterly to interstate route 504 east of Rochester. Interstate route connection 581. Beginning at interstate route connection 580 west of city of Rochester thence generally southerly, easterly and northerly to an interchange with interstate route connection 580 near the easterly line of the city of Rochester. Interstate route connection 590. From interstate route 506 south of Grand Island, generally easterly, southeasterly, and southerly to interstate route 504 in the vicinity of Williamsville to be designated and known as “The Elmer G. H. Youngmann Memorial Highway.” Interstate Route Connection 591. From interstate route 590 in the vicinity of Millersport highway northeasterly to the vicinity of North French road northeast of Buffalo.

Source: Section 340-A — Designation of state interstate routes, https://www.nysenate.gov/legislation/laws/HAY/340-A (updated Sep. 10, 2021; accessed Nov. 1, 2025).

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N.Y. Highway Law Section 340-A Designation of state interstate routes

N.Y. Highway Law Section 340-A
Designation of state interstate routes