Pennsylvania Route 3 (PA 3) is a 24.3-mile (39.1 km) state highway located in the southeastern portion of Pennsylvania. The route runs from U.S. Route 322 Business (US 322 Bus.) in West Chester east to PA 611 in Philadelphia. The route begins in downtown West Chester and heads east out of the borough as a one-way pair of streets. Between West Chester and Upper Darby, PA 3 follows a four-lane divided highway named West Chester Pike through suburban areas. Along this stretch, the route passes through Edgmont, Newtown Square, Broomall, and Havertown. The route has an interchange with Interstate 476 (I-476) between Broomall and Havertown. Upon reaching Upper Darby, PA 3 heads into Philadelphia along Market Street. In Philadelphia, the route follows multiple one-way pairs, running along Chestnu