New York State Route 172 is an east-west highway in Northeastern Westchester County. It runs from New York State Route 117, near Mt. Kisco to New York State Route 137, at Pound Ridge. NY St Rt 172 passes through the following towns in Westchester County. Mt. Kisco Bedford Pound Ridge NY St Rt 172 is multi-plexed in Westchester County. New York State Route 121, near Bedford. NY St Rt 172 intersects the following highways in Westchester County. New York State Route 117, near Mt. Kisco. Interstate 684, near Bedford. New York State Route 22, near Bedford. New York State Route 121, near Bedford. New York State Route 121, near Bedford. New York State Route 137, at Pound Ridge.