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Pennsylvania State Route 100

PA Route 100 marker

PA Route 100
Route information
Maintained by PennDOT
Length: 59.409 mi (95.610 km)
Existed: 1932 – present
Major junctions
South end: US 202 near West Chester
  US 30 in Exton
PA 113 in Lionville
I-76 / Penna Turnpike near Lionville
PA 401 in Ludwigs Corner
PA 23 in Bucktown
US 422 near Pottstown
PA 73 near Boyertown
PA 29 from Hereford to Shimerville
US 222 in Trexlertown
I-78 / US 22 in Fogelsville
North end: PA 309 in Pleasant Corners
Location
Counties: Chester, Montgomery, Berks, Lehigh
Highway system
PA 99 PA 101
US 62 PA 62 PA 63

PA Route 62
Location: Chadds FordPleasant Corners
Existed: 1927–1932

PA Route 100 Truck
Location: Macungie
Length: 3.1 mi (5.0 km)

PA Route 100 marker

Pennsylvania Route 100 (PA 100) is a 59.4-mile (95.6 km) long state highway in the U.S. state of Pennsylvania that runs from U.S. Route 202 (US 202) near West Chester north to PA 309 in Pleasant Corners. The route runs between the western suburbs of Philadelphia and the Lehigh Valley region of the state, serving Chester, Montgomery, Berks, and Lehigh counties. PA 100 intersects several important highways including US 30 in Exton, the Pennsylvania Turnpike (Interstate 76, I-76) near Lionville, US 422 near Pottstown, US 222 in Trexlertown, and I-78/US 22 in Fogelsville. PA 100 has several sections which are multi-lane divided highway with some interchanges, including between US 202 and the Pennsylvania Turnpike in Chester County, between south of Pottstown and New Berlinville, and between Trexlertown and Fogelsville.


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