Blue Route

Interstate 476
Route information
Auxiliary route of I-76
Maintained by PennDOT and PTC
Length:	132.10 mi (212.59 km)
History:	Established 1964 Completed on December 16, 1992
Tourist routes:	Blue Route Scenic Byway
Major junctions
South end:	I-95 in Woodlyn
	US 1 near Springfield PA 3 near Springfield US 30 in Villanova I‑76 in West Conshohocken I-276 / Penna Turnpike in Plymouth Meeting US 22 near Allentown US 209 near Lehighton I-80 / PA 940 near Hickory Run State Park PA 115 in Bear Creek Township PA 315 in Dupont
North end:	I-81 / US 6 / US 11 near Clarks Summit
Location
Counties:	Delaware, Montgomery, Bucks, Lehigh, Carbon, Luzerne, Lackawanna
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Pennsylvania State Route System Interstate US State Scenic Byways Legislative ← PA 475 PA 476 → ← PA 8 PA 9 PA 9 → ← I‑479 I-480 PA 480 → ← PA 492 I-495 PA 501 →

Interstate 495
Location:	Woodlyn-Plymouth Meeting
Existed:	1956–1958

Interstate 480
Location:	Woodlyn-Plymouth Meeting
Existed:	1958–1964

PA Route 9
Location:	Plymouth Meeting – Clarks Summit
Length:	111.04 mi (178.70 km)
Existed:	1980–1996

Interstate 476 (I-476) is a 132.1-mile (212.59 km) auxiliary Interstate Highway in the U.S. state of Pennsylvania designated between Interstate 95 near Chester and Interstate 81 near Scranton, serving as the primary north–south Interstate corridor through eastern Pennsylvania. It consists of both the 20-mile (32.19 km) Mid-County Expressway, locally referred to as the "Blue Route" (although no signs exist with that designation), through the suburban Philadelphia-area counties of Delaware and Montgomery, and the 110.6-mile (177.99 km) Northeast Extension of the Pennsylvania Turnpike connecting the Philadelphia metropolitan area with the Lehigh Valley, the Poconos, and the Wyoming Valley. The Blue Route passes through suburban areas, while the Northeast Extension predominantly runs through rural areas of mountains and farmland, with development closer to Philadelphia and in the Lehigh Valley and the Wyoming Valley. I-476 intersects many major roads including Interstate 76 (the Schuylkill Expressway) in West Conshohocken, Interstate 276 (the Pennsylvania Turnpike) in Plymouth Meeting, U.S. Route 22 near Allentown, and Interstate 80 near Hickory Run State Park.

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