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Pennsylvania Route 23

PA Route 23 marker

PA Route 23
Route information
Maintained by PennDOT, City of Lancaster, Upper Merion Township, and Lower Merion Township
Length: 81.144 mi (130.589 km)
Existed: 1928 – present
Major junctions
West end: PA 441 in Marietta
  US 222 in Lancaster
US 30 east of Lancaster
US 322 in Blue Ball
I-176 in Morgantown
PA 10 in Morgantown
PA 100 in Bucktown
PA 29 in Phoenixville
US 422 in King of Prussia
US 202 in Bridgeport
I-76 in West Conshohocken
East end: US 1 in Philadelphia
Location
Counties: Lancaster, Berks, Chester, Montgomery
Highway system
PA 22 PA 24



PA Route 23 Alternate Truck
Location: East Pikeland Township-Upper Merion Township
Length: 16.0 mi (25.7 km)
Existed: 2013–present



PA Route 23 Alternate Truck
Location: Upper Merion Township
Length: 5.1 mi (8.2 km)
Existed: 2013–present

PA Route 23 Alternate
Location: Upper Merion Township-Lower Merion Township
Existed: 1937–1967

PA Route 23 Truck
Location: Upper Merion Township
Existed: 1950–1967

PA Route 23 marker

Pennsylvania Route 23 (PA 23) is a 81.14-mile-long (130.58 km) state highway in southeastern Pennsylvania. The route begins at PA 441 in Marietta and heads east to U.S. Route 1 (US 1) on the border of Lower Merion Township and Philadelphia. PA 23 begins at Marietta in Lancaster County and continues east to Lancaster, where it passes through the city on a one-way pair and intersects US 222 and US 30. East of Lancaster, the route passes through agricultural areas, serving Leola, New Holland, and Blue Ball, where it crosses US 322. PA 23 passes through the southern tip of Berks County and serves Morgantown, where a ramp provides access to Interstate 176 (I-176). The route runs through northern Chester County and serves Elverson, Bucktown, Phoenixville, and Valley Forge. PA 23 continues into Montgomery County and intersects US 422 in King of Prussia and US 202 in Bridgeport. The route follows the Schuylkill River to West Conshohocken, where it has access to I-76 and I-476, before it continues southeast through Lower Merion Township to US 1.


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