runs along the banks of the Delaware River parallel to I-95 through Delaware County. It then runs a southwest to northeast path through the city of Philadelphia. It traverses West Philadelphia on many one-way pairs and then passes by the Philadelphia Zoo. US 13 then runs through North Philadelphia and Northeast Philadelphia by following Hunting Park Avenue, the Roosevelt Boulevard (which is also US 1), and Frankford Avenue, where it crosses the Pennypack Creek on the oldest bridge in the United States. US 13 then enters Bucks County, again closely following I-95, the Delaware River and US 1. US 13 ends after an interchange with US 1 near Morrisville in Falls Township. The road continues north toward Yardley as Pine Grove Road. History The original 1925 U.S. highway plan, which never came to fruition, had provision for a US 13 in North Carolina. It would have started in Wilmington and run at least as far north as Elizabeth City, following what would become US 17. Although US 13 was signed in most northern states by the late 1920s, it would not reach North Carolina until the early 1950s. The route was proposed as one of the first four-laned highways in the United States of America to Pierre S. du Pont by John J. Raskob so as to run from Wilmington, Delaware, to the state capital, Dover. Du Pont wanted a two-laned highway—the standard at the time, but Raskob suggested that with the growth and development of northern Delaware, there would be a future need for a four-laned one. Du Pont agreed and, to honor Raskob for his insight, sought to name the route after him. However, Raskob declined. Major intersections North Carolina in Eastover in Eastover in Spivey's Corner in Newton Grove in Mar-Mac. The highways travel concurrently to Goldsboro. in Goldsboro. The highways travel concurrently through the city. north of Snow Hill. The highways travel concurrently to south-southwest of Farmville. in Greenville north of Bethel. The highways travel concurrently to south-southeast of Williamston. south of Williamston. The highways travel concurrently to Windsor. northwest of Winton. The highways travel concurrently to northeast of Winton. Virginia in Suffolk. The highways travel concurrently to Chesapeake. in Suffolk. The highways travel concurrently to Chesapeake. in Chesapeake. The highways travel concurrently for approximately . in Chesapeake in Chesapeake in Chesapeake in Norfolk in Norfolk in Norfolk in Virginia Beach Maryland in Pocomoke City in