U.S. Federal Route 1 is an east-west highway in Southern Westchester County. It runs from the Connecticut/New York State Line, at Port Chester, to the Westchester/Bronx Couny Line, at Pelham Manor. U.S. Rt. 1 passes through the following towns in Westchester County. Port Chester Rye Mamaroneck Larchmont Pelham Pelham Manor U.S. Rt. 1 is not multi-plexed in Westchester County. U.S. Rt. 1 intersects the following highway in Westchester County. Interstate 287, at Rye. Interstate 95, at Rye. New York State Route 120, at Rye. New York State Route 125, at Rye. Interstate 95, at Pelham. Hutchunson River Parkway, at Pelham Manor.
