 While the remainder of US 4 east of New York is an east–west route, US 4 in New York is signed north–south due to the alignment the route takes through the state.The portion of the route between Waterford and Whitehall is part of the Lakes to Locks Passage, an All-American Road.The route runs along the Hudson River from Troy to Hudson Falls and the Champlain Canal from Fort Ann to Whitehall.