It serves as a connector between NY 26, NY 126, and the village of Castorland midway between the two highways. The route begins at an intersection with NY 26 in the town of Denmark and heads northeast through Castorland and across the Black River to a junction with NY 126 in the town of Croghan.
This highway acts as a bridge connecting NY 26, NY 126, and the village of Castorland, situated equidistant from the two highways. The route starts at an intersection with NY 26 in Denmark town and moves northeast through Castorland before crossing the Black River to meet NY 126 in Croghan town.