The Pennsylvania Turnpike (PA Turnpike) began one of its most complex projects to date, the total reconstruction and widening at Milepost 320-324, a four-mile stretch in Tredyffrin Township, Chester County.

"For more than 85 years, customers have relied on the Pennsylvania Turnpike to get safely to their destinations," said Brad Heigel, the PA Turnpike's chief engineer. "This project enhances roadway safety, improves customer experience and demonstrates our commitment to maintaining a reliable transit corridor across the Commonwealth."

Started in 1999, the PA Turnpike's Total Reconstruction Initiative rebuilds the road from the ground up, adds an additional travel lane in each direction and increases shoulder and median width to support safety, reduce traffic queuing and enhance emergency responder access. To date, 174 mi. of PA Turnpike mainline (the portion stretching from Ohio to New Jersey) have undergone total reconstruction.

Starting the week of Jan. 19, 2026, crews began removing trees along the Turnpike's right of way and relocating utilities. Construction begins spring 2026. In the early phase of total reconstruction, traffic shifts inward to the median, allowing work on outer lanes. This involves setting up barriers and signage for safety.

Crews demolish and rebuild outer lanes, including roadbeds and bridges, while ensuring minimal ecological impact and maintaining traffic flow. Safety for workers and drivers is a priority, requiring constant monitoring and adjustments.

The approximately $338 million project, fully funded by toll dollars as part of the PA Turnpike Commission's 10-year capital plan, was awarded to H&K Group Inc. in December 2025. In addition to roadway widening, the project also replaces three mainline bridges over local roads, lengthens culverts and improves stormwater draining throughout the area. The project is anticipated to be complete in summer 2031.

For more information on the project, visit paturnpike.com/traveling/construction/site/milepost-320-324.