Design & Construction Details

Mainline Widening Construction Activities

Current Activities: Fall 2025

• Center area grading and paving
• Sediment basin conversion

Construction Update: Fall 2025

Center Area Reconstruction Progressing Toward Completion in Early 2026

Fall 2025 – Fall construction continues to focus on reconstruction of the center area of the Northeast Extension (Interstate 476) and completion of five new bridges from north of the Lansdale Interchange to just south of the Quakertown Interchange under the final major construction stage of the Pennsylvania Turnpike Commission project to widen and reconstruct the I-476 between Mileposts A38 and A44.

Crews completed installing the new stormwater drainage system this summer, and excavation and grading in advance of paving the four new interior lanes is nearly complete.

Paving operations are ongoing project wide.

The concrete decks on the new bridges over Ridge Valley Creek, Kumry Road, Molasses Creek, Unami Creek, and Schmoutz Creek are in place.

Conversion of the 16 sediment basins built under the project to permanent stormwater control basins has begun. Six are scheduled for completion through fall 2025, with the remaining conversions extending through spring of 2026.

Turnpike (I-476) Northeast Extension construction during this stage is expected to take place Monday through Friday between 7:00 AM and 5:00 PM through July 2026. No long-term lane restrictions are expected during this stage, but occasional nighttime lane closures and traffic paces will be required.

This project is anticipated to be completed and open to six lanes of traffic by the end of 2025.

Motorists are advised to slow down to posted work-zone speed limits. The Turnpike is employing Automated Work Zone Speed Enforcement Cameras across the work area to enhance worker safety. Violators of the reduced Work Zone speed limits may be ticketed through the mail.

The current contract is a continuation of the reconstruction and widening that was completed in 2021 between mileposts A31, just north of the Lansdale Exit, and A38, near the Clump Road overpass in Franconia Township. The Extension was widened and improved between the Mid-County Interchange and the Lansdale Interchange under an earlier contract that was completed in 2017.

Completed Construction

The existing overhead bridges within the project corridor have been replaced to accommodate the current widening of the Pennsylvania Turnpike's Northeast Extension from four to six lanes. The overhead bridges carrying Upper Ridge Road, Trumbauersville Road and Steinsburg Road over the Pennsylvania Turnpike's Northeast Extension have been returned to service. Several photos documenting construction progress at each of these structures are provided below.