Pennsylvania Route 291 (PA 291) is an east–west route in Pennsylvania that runs from U.S. Route 13 (US 13) and US 13 Business (US 13 Bus.) in Trainer, Delaware County, east to Interstate 76 (I-76) in South Philadelphia near the Walt Whitman Bridge and the South Philadelphia Sports Complex. Except for a short 1-mile (1.6 km) section between the western terminus and the Chester/Trainer line, PA 291 is mostly a four-lane highway. From the western terminus to the eastern part of Chester, the route has a concurrency with US 13. It runs parallel to the Delaware River for much of the route. The route passes through industrial areas near the river in Delaware County, serving Chester, Eddystone, Essington, and Lester. PA 291 enters Philadelphia near the Philadelphia International Airport, at which