County Route 509 (New Jersey)
County Route 509 (CR 509) is a county highway in the U.S. state of New Jersey. The highway exists in two segments– one unsigned segment exists in northern Middlesex County while the signed mainline extends from North Avenue (Route 28) in Westfield to Straight Street (CR 504) in Paterson. For two small stretches – in Clifton at the interchange with Route 19, and in Paterson as it crosses over the Passaic River – CR 509 splits into separate northbound and southbound alignments. CR 509 intersects with the Garden State Parkway at Exit 138 in Kenilworth and again at Exit 148 in Bloomfield. Route description The unsigned Middlesex County segment begins at the intersection of Park Avenue (CR 531) and Maple Avenue (CR 602) in South Plainfield. The county route, not signed as CR 509 but rather CR 602, heads northeast on Maple Avenue through a residential neighborhood. After crossing Woodland Avenue, the road enters Edison and passes between two parts of the Plainfield Country Club. CR 602 breaks off the road at Inman Avenue leaving CR 509 on Old Raritan Road continuing northeast on a locally maintained road. At the Union County line, the CR 509 designation ends and Raritan