New York State Route 406 is a short state highway located in Steuben County, New York. It runs approximately 2.5 miles, connecting U.S. Route 15 to New York State Route 17 near the village of Hornellsville. The route primarily serves local traffic and provides access to nearby residential areas and businesses. Established in the mid-20th century, it plays a role in the regional transportation network, facilitating movement within the surrounding communities.