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Milepost 324-326

Traveling Construction Milepost 324-326

Total Reconstruction Project

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Project Overview

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This project widened and reconstructed two miles of the Pennsylvania Turnpike from the Valley Forge Service Plaza (Milepost 324) to the Valley Forge Interchange (Milepost 326) in Tredyffrin Township, Chester County.

Project Summary: This project included the reconstruction and six-lane widening of the PA Turnpike (I-76) between mileposts 324 and 326.

Construction Start: Fall 2021

Construction Completion: May 2025

Project Total: $117 million

General Contractor: Trumbull Corp. 

Construction Manager: Hill International, Inc.

Design Consultant: STV, Inc.

The existing four-lane roadway with a 10-foot median and 12-foot-wide shoulders was converted into a six-lane facility with three 12-foot travel lanes in each direction, a 26-foot median, and 12-foot-wide outside shoulders.

The project also included replacement of mainline bridges carrying the Turnpike over U.S. 422/N. Gulph Road, Glenhardie Road, and Thomas Road, plus lengthening of culverts, construction of sound barriers at certain locations, and construction of stormwater management facilities and other drainage improvements across the project.

The original project was six miles in length from the Route 29 Interchange (Milepost 320) to the Valley Forge Interchange (Milepost 326). 

Due to litigation and the current financial challenges facing the Commission, it was broken into two separate construction contracts: This project, plus a second contract for the western two-thirds of the corridor from the Route 29 Interchange (Milepost 320) to the Valley Forge Service Plaza (Milepost 324). For more information on that project, go to www.patpconstruction.com/milepost-320-324/design-construction-details

Typical sections graphic

Design Details

Cars on roadway

This project involved a full-depth total reconstruction of two miles of the Pennsylvania Turnpike. The existing four-lane roadway with a 10-foot median and 12-foot shoulder was converted into a six-lane facility with three 12-foot travel lanes in each direction, a 26-foot median, and 12-foot shoulders.

This project also included the replacement of three mainline bridges, lengthening of culverts, construction of sound barriers, and the construction of stormwater management facilities and other drainage improvements at various locations throughout the project limits.

Project Plans

This project is part of the Pennsylvania Turnpike Commission's statewide total reconstruction initiative, which entails rebuilding sections of the 70-plus-year-old Turnpike. The new roadway design meets current interstate design criteria and will provide a safer and more efficient travel experience for Turnpike customers. This section is the most heavily traveled four-lane section of the east/west mainline Turnpike, and projected growth dictates additional lanes. In addition to the proposed improvements benefitting Turnpike customers, the adjacent communities will be enhanced through stormwater improvements and noise mitigation.

The project originally extended another four miles west to the Route 29 Interchange (Milepost 320). Due to the funding challenges and to reduce prolonged inconvenience to the local residents, this project is being constructed as the first phase.

The links below show the current project plans.

  • Open House Plans-01-MP320-MP326
  • Open House Plans-02-MP320-MP326
  • Open House Plans-03-MP320-MP326

Frequently Asked Questions

Does the PTC expect to continue widening to the west?

Yes. This project consists of the two-mile section from the Valley Forge Interchange (Milepost 326) to the Valley Forge Service Plaza (Milepost 324). The next project will extend another four miles west to the Route 29 Interchange (Milepost 320). The timing of the next project will depend upon available funding after this project is completed.

Will tolls have to be increased to pay for this project?

No. The Turnpike does not raise tolls to fund individual projects.

How is this project funded?

The project is funded entirely by Turnpike toll dollars, with no federal funds or state tax dollars involved.

What are you doing to protect the environment?

In addition to coordinating with the local townships, the PTC continues to work with local, state and federal regulatory agencies such as the Chester County Conservation Office, the Department of Conservation and Natural Resources, the Pennsylvania Department of Environmental Protection, the Pennsylvania Fish and Boat Commission, the US Army Corps of Engineers, and local special interest groups to make sure the project is completed with the least impact to the existing environment.

When will the sound barriers be installed?

The sound barriers for this project will be built during the first stage of construction, which will take approximately 2 years to complete between the fall of 2021 and end of 2023. Not all sound barriers will be constructed at the same time, however they will all be constructed by the end of 2023. The location of the sound barrier, relative to the Turnpike and construction access, influences the decision on when a given section of barrier can be constructed.

What will the sound barriers look like?

The sound barriers consist of concrete panels with an ashlar stone pattern, supported by steel posts. Property owners living adjacent to the Turnpike were provided an opportunity to express their preferences for sound barrier color and texture at previous community meetings. Please refer to the Sound Barrier Community Meetings link under the Traffic Noise Resources tab on the website for additional details..

How did the PTC determine where the sound barriers will be located?

Please refer to the Noise Impact Analysis report under the Traffic Noise Resources tab on the website for additional information.

When will the house at 1528 Glenhardie Road that the PTC acquired for stormwater basins be demolished?

Demolition of the house at 1528 Glenhardie Road is anticipated to be completed in September or October 2021.

Will fence be provided between the construction area and adjacent properties?

Yes. The contractor will be required to delineate the work zone once the project begins and those areas currently missing right-of-way fence will be replaced.

Why were the trees cut down prior to construction?

Environmental regulations require that cutting down trees greater than 5 inches diameter occur between November 1st and March 31st due to the presence of northern long-eared bats, which are an endangered species in this region. In order to not adversely impact the construction schedule and complete construction as soon as possible, the PTC utilized a separate contract to clear the trees within the allowable timeframe.

Will construction occur at night?

Night-time work will be limited with the exception of work that requires lane closures on the Turnpike. Lane closures on the Turnpike can only occur during off peak hours at night.

Will the local roads crossing under the Turnpike be impacted during construction?

Thomas and Glenhardie Roads will require single lane patterns for a period of time, in order to provide sufficient room for bridge construction. Temporary traffic signals will be installed on each side of the bridge to control the flow of traffic. Thomas Road will also require a temporary detour using Glenhardie Road during Stage 2 of construction to reconstruct the roadway underneath the bridge. Both roads will require periodic closures for short term operations such as bridge demolition and erection of the new beams. The website will be updated during construction to provide advance notice on the timing of these restrictions.

When is construction expected to begin and how long will it take to complete?

The project is going out to bid in July 2021 and construction is expected to begin in September 2021. Construction is anticipated to take approximately 3 years with the Turnpike open to 6 lanes of traffic by November 2024. There may be some additional landscaping and seeding associated with converting the stormwater basins to their permanent condition that needs to be completed in the Spring of 2025 depending on weather and timing. The Contractor will provide a more detailed schedule once the project is awarded. Regular three week look ahead updates will be posted weekly on the project website as construction progresses, providing advanced notice of specific work activities.

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