County Route 503 (New Jersey)

County Route 503
CR 503 highlighted in red
Route information
Length	17.95 mi[1] (28.89 km)
Major junctions
South end	Route 120 in East Rutherford
Major intersections	US 46 in Little Ferry Route 4 in Hackensack CR 502 in Westwood
North end	NY 304 at New York state line in Montvale
Location
Country	United States
State	New Jersey
Counties	Bergen
Highway system
County routes in New Jersey 500-series routes
← CR 502 → CR 504

County Route 503 (CR 503) is a county highway in the U.S. state of New Jersey. The highway extends 17.95 miles (28.89 kilometers) from Paterson Plank Road (Route 120) in East Rutherford to the New York state line at the Montvale NJ/Pearl River NY border, where it continues as New York State Route 304. It parallels the Hackensack River and New Jersey Transit's Pascack Valley Line for much of its route.

For the northern portion of the roadway, from River Edge to Montvale, it is known as Kinderkamack Road. In Hackensack, the roadway is known as Hackensack Avenue, River Street, and Moonachie Road. In Little Ferry, it is named Liberty Street, and in Moonachie to its southern terminus in Carlstadt it is known as Moonachie Road and Washington Avenue, respectively.

Kinderkamack comes from the language of the Lenape Native Americans, meaning "place of ceremonial dance and worship." During the American Revolutionary War, General Lafayette's division camped in what is now Oradell at Kinderkamack and Soldier Hill Roads.^[2]