NJ 173 begins at Beaver Avenue (CR 626) in Clinton. There is an overpass over NJ 31, followed by a traffic light at Center Street. Turn left to go south on NJ 31.
Photo taken December 2015.
Skipping about a mile, NJ 173 runs west as a two-lane undivided road.
Photos taken December 2015.
Welcome to the Township of Union!
Photo taken December 2015.
Straight ahead, NJ 173 turns into a ramp onto I-78/US 22. It is multiplexed along the expressway for one exit.