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
  PA 82 in Elverson
PA 345 in East Nantmeal Township
PA 100 in West Vincent Township
PA 113 in West Pikeland 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 PA 23 in Caernarvon Township, across the county line from Elverson. The eastern terminus is at U.S. Route 30 (US 30) in East Whiteland Township, a short distance west of Malvern. PA 401 is called Conestoga Road its entire length and runs through rural areas with suburban development toward the eastern part of the route. PA 401 follows a former turnpike chartered in 1809 known as the Little Conestoga Turnpike. PA 401 was designated along Conestoga Road between PA 29 (Phoenixville Pike) and US 30/PA 1 in 1928. The route was extended west to PA 23 in the 1930s, at which time the entire length was paved.

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]


A turnpike called the Little Conestoga Turnpike was chartered on March 16, 1809 to run from the Philadelphia and Lancaster Turnpike near the Warren Tavern in Malvern northwest toward Berks County, where it intersected a junction between roads leading to Morgantown and Reading.[4] When Pennsylvania first legislated routes in 1911, the current route of PA 401 was not legislated as a route.[5] PA 401 was designated in 1928 to run along Conestoga Road between PA 29 (Phoenixville Pike) and US 30/PA 1 while the road west from PA 29 to PA 23 remained unnumbered. At this time, the entire length of Conestoga Road, including the part designated PA 401, was unpaved.[6] During the 1930s, PA 401 was extended west along Conestoga Road from PA 29 to its current western terminus at PA 23. At this time, the entire length was paved.[7] PA 401 has remained on the same alignment since.[3]

Major intersections[edit]

County Location mi[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.

PA Route 401 Alternate Truck
Location: Upper Uwchlan, Pennsylvania
Length: 6.4 mi[8] (10.3 km)
Existed: 2013–present

Pennsylvania Route 401 Alternate Truck is a truck route around a weight-restricted bridge over a branch of the Pickering Creek in West Pikeland Township, on which trucks over 32 tons and combination loads over 40 tons are prohibited. It was signed on November 1, 2013 and is routed on Byers Road, Graphite Mine Road, PA 100, and PA 113. It has an interchange the Pennsylvania Turnpike at exit 312, running concurrent with PA 100.[8][9]

See also[edit]


  1. ^ a b Bureau of Maintenance and Operations (January 2015). Roadway Management System Straight Line Diagrams (Report) (2015 ed.). Pennsylvania Department of Transportation. Retrieved June 30, 2015. 
  2. ^ a b Google (January 15, 2011). "overview of Pennsylvania Route 401" (Map). Google Maps. Google. Retrieved January 15, 2011. 
  3. ^ a b c Chester County, Pennsylvania (Map) (17th ed.). 1"=2000'. ADC Map. 2006. ISBN 0-87530-778-7. 
  4. ^ Futhey, John Smith, Cope, Gilbert (1881). History of Chester County, Pennsylvania, with Genealogical and Biographical Sketches. Louis H. Everts. p. 354. Retrieved January 19, 2014. 
  5. ^ Map of Pennsylvania Showing State Highways (PDF) (Map). Pennsylvania Department of Highways. 1911. Retrieved December 14, 2014. 
  6. ^ Pennsylvania Highway Map (Philadelphia Metro) (Map). Gulf Oil. 1928. Retrieved November 8, 2007. 
  7. ^ Official Road Map of Pennsylvania (PDF) (Map). Pennsylvania Department of Highways. 1940. Retrieved December 16, 2014. 
  8. ^ a b Google (December 17, 2014). "overview of Pennsylvania Route 401 Alternate Truck" (Map). Google Maps. Google. Retrieved December 17, 2014. 
  9. ^ "Risk-Based Bridge Postings - State and Local Bridges" (PDF). Pennsylvania Department of Transportation. October 8, 2013. Retrieved December 18, 2014. 

External links[edit]

Route map: Bing / Google