Design & Construction Details

Mainline Widening Construction Activities

Current Activities: Summer 2025

• Center area paving
• Center area bridge deck paving
• Stormwater drainage installation

Construction Update: Summer 2025

Center Area Pavement, Bridge Construction Continues This Summer

Summer 2025 – Reconstruction of the original four lanes of pavement and median and construction of the center section of five new bridges continue this summer from north of the Lansdale Interchange to approaching the Quakertown Interchange in the final major construction stage of the Pennsylvania Turnpike Commission project to widen and reconstruct the Turnpike’s Northeast Extension (Interstate 476) between Mileposts A38 and A44.

Northbound and southbound traffic was shifted onto the new outside pavement and shoulders last fall to complete Stage 2 work on the $180 million toll-funded infrastructure project.

Crews are completing installation of the Stage 3 stormwater drainage system ahead of paving operations, progressing generally from north to south through the work zone.

The concrete deck was placed last spring on the bridges over Molasses Creek and Schmoutz Creek at the northern end of the project. Deck construction is underway in the center section of the bridges over Ridge Valley Creek and Kumry Road.

Concrete bridge beams are being erected at Unami Creek, and deck construction is scheduled to begin in late July.

The Kumry Road detour will remain in effect and be utilized on an as-needed basis between 9:00 AM and 3:00 PM and 6:00 PM and 6:00 AM for the foreseeable future.

Conversion of the 16 sediment basins built under the project to permanent stormwater control basins has begun. Eight are scheduled to be converted through fall 2025, and the remainder in 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.

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.