Interstate 476 (
I-476) is a
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
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
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.