 It initially began at the Canada–United States border north of the village of Chateaugay and ended at an intersection with NY 3 in Cadyville, a small hamlet within the town of Plattsburgh.At the time, NY 3 was the primary east–west highway into the city of Plattsburgh.In the early 1970s, a new highway was constructed north of NY 3 between NY 374 and NY 22 just outside the Plattsburgh city limits.