a block to the south. Chestnut Street carries three lanes of one-way eastbound traffic while Walnut Street carries two lanes of one-way westbound traffic. PA 3 follows Chestnut and Walnut street east through residential areas of West Philadelphia, passing several blocks of rowhomes with some businesses. Walnut Street passes to the north of William L. Sayre High School between 59th and 58th streets while Chestnut Street passes south of West Philadelphia High School before crossing 49th Street, south of the Community College of Philadelphia's West Regional Center past 48th Street, and south of West Catholic Preparatory High School prior to crossing 45th Street. Farther east, the route reaches the University City neighborhood of Philadelphia, where Walnut Street runs along the edge of the University of Pennsylvania campus. The streets cross a SEPTA trolley track at 40th Street. Upon reaching US 13, westbound PA 3 shifts from Walnut Street to Market Street, running concurrent with US 13 southbound on four-lane divided 38th Street between Market and Walnut streets; 38th Street carries a SEPTA trolley track in the northbound direction. East of US 13, westbound PA 3 follows on Market Street, a three-lane road with a center left-turn lane. At this point, SEPTA's Market–Frankford Line runs underneath Market Street, with SEPTA's Subway–Surface Trolley Lines joining at 36th Street. Eastbound PA 3 continues east on one-way Chestnut Street. The route passes several multistory commercial buildings as it runs through the northern part of the Drexel University campus. At 33rd Street, eastbound PA 3 turns north and joins the westbound direction on Market Street, continuing east. Upon reaching 32nd Street, PA 3 splits into another one-way pair, with eastbound PA 3 continuing east along Market Street and westbound PA 3 following four-lane John F. Kennedy Boulevard, both being two-way streets. The route passes under CSX's Harrisburg Subdivision railroad line before coming to the 30th Street intersection at 30th Street Station, which serves Amtrak's Northeast Corridor railroad line, the SEPTA Regional Rail system, and NJ Transit's Atlantic City Line. The eastbound direction passes to the south of the train station and north of the city's former main Post Office facility as a four-lane undivided street. The westbound direction bends north around the train station, running along a one-way street with two lanes of traffic that heads north on Schuykill Avenue and crosses under the SEPTA tracks before turning west on Arch Street. It then passes