Embedded Files
100 years of US routes: 1926-2026
Endpoints of
This page is about the east segment of US 422 (not to be confused with the separate west segment of US 422).
Mileage: in 1989 AASHTO listed a figure of 88 miles for US 422(e). That is reasonably close to our own 2020 measurement, which yielded 82.9 miles. Want historic mileages? Our handy reference book includes the mileages that were published in all 13 of AASHO/AASHTO's historic route logs (spanning the years 1927 to 1989).
1927-1931
East: Philadelphia, PA
West: Reading, PA
1931-1960
East: Philadelphia, PA
West: Harrisburg, PA
1960-1984
East: Philadelphia, PA
West: Hershey, PA
1984-present
East: King of Prussia, PA
West: Hershey, PA
For about the first 60 years of its existence, the east end of the eastern segment of US 422 was at various points around Philadelphia. From 1927 to 1931, US 422 made it only as far west as Reading, but then US 422 was extended to an endpoint in Harrisburg.
Hershey
In 1960 the west end of US 422 was truncated to its current terminus, which is between Hershey and Hummelstown, at its junction with US 322. These photos were from eastbound US 322, at the beginning of US 422:
Nitzman, 2000
Backlin, Oct. 2018
These shots were taken from the opposite direction, looking towards US 422's interchange with US 322 and PA hwy. 39:
Nitzman, 2000
Backlin, Oct. 2018
King of Prussia
In 1984 the east end of US 422 was truncated to its current location in King of Prussia, at its junction with US 202. The last eastbound trailblazer was posted just before the Pennsylvania Turnpike underpass:
Google Maps Street View, Jul. 2021
Not far ahead, signage indicates the options that are available to drivers at the east terminus of US 422:
GMSV, Jul. 2021
Before that sign bridge was installed, the ground-mounted sign at that location included an "End" assembly:
Nitzman, 2000
These next photos show signage for the beginning of US 422 as seen from US 202 (northbound and southbound, respectively):
GMSV, Aug. 2021
GMSV, Sep. 2019
Drivers exiting to US 422 there will soon encounter the first westbound confirming marker:
Elbert, July 2006
Research and/or image credits: David Backlin; Chris Elbert; Jeff Kitsko; Alex Nitzman; Dale Sanderson; Michael Summa; xirtam
Page originally created 2000;last updated May 9, 2025.
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