State highway in Putnam County, New York, US
New York State Route 403 (NY 403) is a 2.27-mile-long (3.65 km) state highway located entirely within Putnam County. It connects NY 9D in Philipstown at its northern end to US 9 in the hamlet of Graymoor, where the Appalachian Trail crosses both highways. At that intersection, NY 403 is signed as a route to the Bear Mountain Bridge. Half of its length is uphill going south.
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