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Interstate 78 in Pennsylvania
Interstate 78 (I-78) is a major east–west Interstate Highway stretching from Union Township, Lebanon County, Pennsylvania, in the west to the Holland Tunnel and New York City in the east. In Pennsylvania, I-78 runs for about 78 miles (126 km) from the western terminus at I-81 in Union Township east to the New Jersey state line near Easton in Northampton County. Much of I-78 west of Allentown predates the Interstate Highway System as a freeway upgrade of U.S.
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