 PA 73 passes near urban homes and commercial development and comes to a ramp to northbound I-95 at the Princeton Avenue intersection.The route turns south onto New State Road, with State Road continuing southwest to provide access to southbound I-95, and passes under I-95 before it curves southwest to parallel the interstate as a four-lane road through industrial areas.PA 73 reaches an interchange at Levick Street and the approach to the Tacony–Palmyra Bridge, at which point the route heads southeast onto the bridge over the Delaware River.