​​​U.S. 422 Section M1B

County: Montgomery
State Route: U.S. Route 422
Facility Name: Pottstown Bypass
Municipality: Lower Pottsgrove Township
Project Type: Reconstruction
Total Length: 2.07 miles
Reconstruction Length: 1.64 miles
Average Daily Traffic (ADT): 51,799 vehicles per day

The U.S. 422 Section M1B project involves the total reconstruction of 1.67 miles of U.S. 422 from the Sanatoga Interchange to the Norfolk Southern railroad tracks just west of Porter Road in Lower Pottsgrove Township, Montgomery County. 

Under this project, U.S. 422 will be reconstructed on both existing and revised alignments to improve horizontal curve radii, shoulder widths, and vertical clearance to enhance travel and safety. 

A culvert at Sprogels Run, located just east of Porter Road, along with an existing single-span bridge carrying U.S. 422 over Porter Road, will be removed and replaced with a new two-span bridge. The bridge carrying U.S. 422 over Sanatoga Road and Sanatoga Creek will also be reconstructed and widened.

Additional improvements under this project include:

• Reconstructing and lengthening the acceleration ramp from the Sanatoga Interchange (Township Line Road) to westbound U.S. 422;
• Installing Intelligent Transportation System (ITS) equipment and components along the U.S. 422 corridor and on arterial roadways;
• Constructing sound barriers along portions of westbound U.S. 422;
• Upgrading existing and installing new signing;
• Replacing the closed system drainage system and cross culverts throughout the project limits; and
  
• Improving stormwater management facilities, including two extended detention basins.