U.S. Federal Route 22 runs briefly in Southern Warren County. It runs from the Hunterdon/Warren County Line, near Bloomsbury, to the New Jersey/Pennsylvania State Line, at Phillipsburg. U.S. Rt. 22 passes through the following town in Warren County. Phillipsburg U.S. Rt. 22 is multi-plexed in Warren County. Interstate 78, from the Hunterdon/Warren County to Phillipsburg. U.S. Rt. 22 intersects the following highways in Warren County. Interstate 78, at Phillipsburg.
A toll warning sign on WB U.S. Rt. 22. (April, 2025) WB U.S. Rt. 22 at the toll plaza. (April, 2025) WB U.S. Rt. 22 at the toll plaza. (April, 2025) A guide marker on Uniontown Road. A guide marker in Phillipsburg. WB U.S. Rt. 22 near the Delaware River.
