N.Y. High. Law § 342-V
All that portion of the state highway system beginning at the Pennsylvania - New York line in the county of Steuben south of the town of Lindley travelling north on United States route fifteen through the town of Lindley to the city of Painted Post; continuing northwest on route seventeen to the town of Campbell; continuing northwest on route four hundred fifteen through the village of Cohocton to route fifteen; continuing north on route fifteen through the towns of Livonia, East Avon and West Henrietta to the city of Rochester, terminating at the intersection of route fifteen and interstate route four hundred ninety; provided however, that the portion of route fifteen located within Steuben county shall be known as the Williamson Road section of the Marine Corps League Memorial Highway.
N.Y. High. Law § 342-V