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The list of Interstate Highways in Pennsylvania encompasses 23 Interstate Highways—12 primary routes and 11 auxiliary routes—which exist entirely or partially in the U.S. state of Pennsylvania. In Pennsylvania, most of the Interstate Highways are maintained by the Pennsylvania Department of Transportation (PennDOT).
Interstate 70 (I-70) is an Interstate Highway that is located in the Commonwealth of Pennsylvania in the United States. It runs east to west across the southwest part of Pennsylvania and serves the southern fringe of the Pittsburgh metropolitan area. [2] About half of this route is concurrent with I-76 on the Pennsylvania Turnpike, which is a ...
PA Routes are also called Pennsylvania Traffic Routes, and formerly State Highway Routes. [2] There are 41,643 mi (67,018 km) of roadway maintained by state agencies, with 39,737 mi (63,951 km) maintained by PennDOT, 554 mi (892 km) maintained by the Pennsylvania Turnpike Commission, and 1,352 mi (2,176 km) maintained by other state agencies.
U.S. Route 22 (US 22) is an east–west United States Numbered Highway that stretches from Cincinnati, Ohio, in the west, to Newark, New Jersey, in the east.In Pennsylvania, the route runs for 338.20 miles (544.28 km) between the West Virginia state line in Washington County, where it is a freeway through the western suburbs of Pittsburgh, and then runs east to Easton and the Pennsylvania ...
U.S. Route 322 (US 322) is a spur of US 22, running from Cleveland, Ohio, east to Atlantic City, New Jersey.In the U.S. state of Pennsylvania, the route runs from the Ohio state line in West Shenango Township southeast to the Commodore Barry Bridge over the Delaware River in Chester, at which point the route crosses into New Jersey, meeting the New Jersey Turnpike at exit 2.
Interstate 81 (I-81) is a north–south Interstate Highway, stretching from Dandridge, Tennessee, northeast to Fisher's Landing, New York, at the Canada–United States border. In Pennsylvania , I-81 runs for 232.76 miles (374.59 km) from the Maryland state line northeast to the New York state line near Hallstead and is called the American ...
The Pennsylvania Turnpike, sometimes shortened to Penna Turnpike or PA Turnpike, is a controlled-access toll road which is operated by the Pennsylvania Turnpike Commission (PTC) in Pennsylvania. It runs for 360 miles (580 km) across the southern part of the state, connecting Pittsburgh and Philadelphia , and passes through four tunnels as it ...
What is now I-90 was originally planned as part of the Pennsylvania Turnpike system in the 1950s. [4] With the creation of the Interstate Highway System in 1956, this road was dropped from the turnpike system and would instead be built as a part of I-90. [4] [5] I-90 was completed through Pennsylvania on October 28, 1960.