Pennsylvania Route 401

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PA Route 401 marker

PA Route 401
Route information
Maintained by PennDOT
Length: 20.175 mi[1] (32.469 km)
Major junctions
West end: PA 23 in Caernarvon Township
  US 202 in East Whiteland Township
East end: US 30 in East Whiteland Township
Counties: Berks, Chester
Highway system
PA 399 PA 402

Pennsylvania Route 401 (PA 401) is a 20.2-mile-long (32.5 km) east–west state route in Berks and Chester Counties, located in southeast Pennsylvania. The western terminus is at Pennsylvania Route 23 in Caernarvon Township, across the county line from Elverson. The eastern terminus is at U.S. Route 30 in East Whiteland Township, a short distance west of Malvern.

The route was paved in 1936 from Pennsylvania Route 29 to U.S. Route 30. This was also when the western terminus was moved from Chester Springs to its present location.[citation needed]

Recent upgrades enlarged and streamlined the eastern terminus at US 30, where PA 401 intersects US 30 at a sharp angle on a steep slope.

Route description[edit]

Merging onto Pennsylvania Route 401 from US 202 in East Whiteland Township, PA

PA 401 begins at an intersection with PA 23 in Caernarvon Township, Berks County, heading southeast on two-lane undivided Conestoga Road. The route heads into agricultural areas as it crosses into Elverson, Chester County, where it runs between farmland to the north and rural areas of woods and homes to the south, crossing PA 82. After this junction, the road runs between housing developments to the north and rural areas to the south, crossing into West Nantmeal Township. PA 401 continues into forested areas with some farm fields as it enters East Nantmeal Township and comes to the PA 345 intersection. At this point, the route continues southeast through more woods before heading into farmland and turning south. The road crosses into forests and turns sharply to the east, entering areas of farms with a few residences. Farther east, PA 401 heads into more wooded areas of homes as it crosses into West Vincent Township and reaches the PA 100 junction.[2][3]

The route continues southeast past a mix of farms, woods, and housing developments, briefly crossing into Upper Uwchlan Township before heading back into West Vincent Township. The road curves south before continuing southeast into West Pikeland Township and intersecting PA 113. Pa st this intersection, PA 401 passes through wooded areas of residential development, passing under the Pennsylvania Turnpike (I-76). A short distance later, the route comes into Charlestown Township and passes more forested areas of homes before turning east into East Whiteland Township. The route passes more housing developments as it widens to four lanes at the Phoenixville Pike intersection and reaches the interchange with the US 202 freeway, where it is briefly a divided highway. The route narrows back to a two-lane undivided road past this interchange and crosses the Chester Valley Trail before continuing southeast to the eastern terminus at US 30 in commercial areas.[2][3]

Major intersections[edit]

County Location Mile[1] km Destinations Notes
Berks Caernarvon Township 0.000 0.000 PA 23 (Main Street) – Morgantown, Elverson, Phoenixville
Chester Elverson 0.748 1.204 PA 82 (South Chestnut Street) – Elverson, Coatesville
East Nantmeal Township 3.052 4.912 PA 345 (Bulltown Road) – Warwick, Coatesville
West Vincent Township 9.493 15.278 PA 100 (Pottstown Pike) – Pottstown, Lionville
West Pikeland Township 13.776 22.170 PA 113 (Uwchlan Avenue) – Phoenixville, Lionville
East Whiteland Township 18.258 29.383 US 202 – King of Prussia, West Chester Interchange
20.175 32.469 US 30 (Lancaster Avenue) – Paoli, Frazer
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

PA 401 Alternate Truck[edit]

PA 401 Alternate Truck at intersection with PA 100 in Eagle.

Pennsylvania Route 401 Alternate Truck
Location: Upper Uwchlan, Pennsylvania
Existed: 2013–present

Pennsylvania Route 401 Alternate Truck is a route that circumvents a narrow bridge in Chester Springs, Pennsylvania. It was signed on November 1, 2013 and is partially routed on Byers Road, Graphite Mine Road, PA 100, and PA 113.

See also[edit]


  1. ^ a b Bureau of Maintenance and Operations (December 31, 2012). "Roadway Management System Straight Line Diagrams" (2013 ed.). Pennsylvania Department of Transportation. Retrieved September 14, 2013. 
  2. ^ a b Google Inc. "overview of Pennsylvania Route 401". Google Maps (Map). Cartography by Google, Inc.,-95.677068&sspn=31.784549,86.572266&ie=UTF8&t=h&z=12. Retrieved January 15, 2011.
  3. ^ a b ADC Map (2006). Chester County, Pennsylvania (Map). 1"=2000' (17th ed.). ISBN 0-87530-778-7.

External links[edit]

Route map: Google / Bing