High Quality Content by WIKIPEDIA articles! Route 33 is a state highway in the U.S. state of New Jersey. The highway extends 42.03 miles (67.64 km), from Trenton at an intersection with U.S. Route 1 and Route 129 to an intersection with Route 71 in Neptune Township. The speed limit on Route 33 differs in zones. The highest is 55 mph (85 km/h) in Zone 9. There are several intersections on 33 with future developments.