County Route 503 is a county highway in the U.S. state of New Jersey. The highway extends 17.95 miles from Paterson Plank Road 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.

Route 120 is a state highway located in Bergen County, New Jersey, United States. It extends 2.65 mi (4.26 km) from an interchange with Route 3 in East Rutherford to another interchange with Route 17 in Carlstadt, where it continues to the west as County Route 120. Route 120 serves the Meadowlands Sports Complex - which consists of MetLife Stadium, Meadowlands Racetrack, and the Meadowlands Arena - and the American Dream shopping and entertainment complex. It heads north from Route 3 as a six-lane freeway through the sports complex to an interchange with the southern terminus of County Route 503. From here, Route 120 heads northwest along the northern edge of the sports complex as four-lane divided Paterson Plank Road, passing through industrial and commercial areas.