Route 163 is a short 0.30-mile (0.48 km) long state highway in the county of Warren in New Jersey. The route, which is currently a stub, used to be the approach to the destroyed Delaware Bridge, which was a road bridge over the Delaware River, connecting the settlement of Delaware, New Jersey with Portland, Pennsylvania. Until 1953, the bridge carried U.S. Route 46 over the river. The bridge has been destroyed, but the approaches are still state-maintained. A still-existing bridge carries an abandoned ex-Delaware, Lackawanna and Western Railroad line across the river just north of the former road crossing. The unsigned Route 163 runs from US 46 north to a dead end on the east side of US 46, all in Knowlton Township, New Jersey. From the dead end, the bridge approach continued northwest and