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Route 100 Traffic Congestion

Additional Northbound Lane

This project will reduce congestion along Route 100 by adding a third northbound travel lane, starting at the on-ramp from Pottstown Pike in the south and continuing through the eastbound on-ramp for the Route 30 Bypass. Construction is expected to begin in 2027 and last 12-15 months.

Project Description

Visual Depiction

Public Presentation

The Township hosted a public presentation of the proposed third northbound lane on PA 100 at the Board of Supervisors Meeting on July 23, 2025. Bowman, the project design team, presented the proposed improvements and the project schedule and fielded questions from residents who attended the meeting. 

View the presentation.

Congestion Mitigation Study

In 2018 the Township completed a congestion mitigation study for Pottstown Pike (PA Route 100), between Boot Road and the US Route 30 Bypass. Township Supervisors, staff and a study advisory committee (SAC) made up of local residents, property owners and regional agencies worked on the study to identify means of alleviating congestion and improving mobility along the PA Route 100 corridor by the Exton train station.

The SAC and the project consultant, McMahon Associates (now Bowman), identified and evaluated multiple options for improving the corridor. The final recommendation included various intersection improvements and adding a new northbound lane between the US Route 30 Bypass intersection and the point where Pottstown Pike merges with PA Route 100.  

Rte 100 traffic overhead 2

Because Route 100 is a state road, Township officials, along with PennDOT, submitted a grant application for engineering and permitting the additional northbound lane. In the summer of 2022 the project was approved to be funded through the Transportation Improvements Program (TIP) by the Delaware Valley Regional Planning Commission (DVRPC) through state and federal dollars. The congestion mitigation study was successful and its results helped to leapfrog this project ahead of many other transportation projects in the region, getting at the front of the line for PennDOT support and funding.

  1. Justin Smiley

    Capital & Special Projects Manager

Contact Us

  1. West Whiteland Township

  1. 101 Commerce Drive

  1. Exton, PA 19341

  1. Phone: 610-363-9525

  1. West Whiteland Township PA Homepage

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