High Quality Content by WIKIPEDIA articles! New York State Route 431 (NY 431) is a state highway in Essex County, New York, United States. The highway, also known as the Whiteface Mountain Veterans Memorial Highway, begins at an intersection with NY 86 in Wilmington and climbs Whiteface Mountain in the Adirondacks. The New York State Department of Environmental Conservation maintains the highway, which is 7.96 miles (12.81 km) long.