The Route 29 All‑Electronic Interchange represents a transformative milestone for the Pennsylvania Turnpike. As the first four-directional system, all‑electronic interchange along the system enables E‑ZPass customers to safely enter or exit the Turnpike in any direction while maintaining typical highway speeds. Developed to improve mobility along one of the most heavily traveled four-lane sections of the east-west Turnpike mainline, the project marks the Pennsylvania Turnpike Commission’s (PTC) first major step toward a fully cashless tolling network.
What challenges did STV address?
This vital 14-mile segment of the Turnpike carried significant congestion and operational challenges before the interchange was constructed. The PTC needed a modern, efficient interchange design that would improve access, reduce bottlenecks and streamline tolling operations – all while laying the groundwork for a future statewide conversion to all‑electronic tolling. Environmental clearances, traffic safety and integration with existing infrastructure added further complexity.
What solutions did STV deliver?
As the Commission’s primary design consultant, STV and its subconsultants provided comprehensive engineering, environmental services and construction support. The team delivered roadway, structural, geotechnical and environmental design solutions that enabled seamless, high‑speed electronic tolling. STV’s work helped the Turnpike integrate all‑electronic tolling infrastructure and verify the interchange operated safely for both E‑ZPass and non‑E‑ZPass motorists.
How does this project benefit the region?
The new interchange improves safety, enhances access to the Turnpike, and reduces congestion for commuters and regional travelers. It also advances the Commission’s long‑term strategy for a modern, cashless tolling system, improving operational efficiency and traveler convenience across Pennsylvania’s transportation network.
Key Stats and Accolades
- First four‑directional, all‑electronic interchange on the Pennsylvania Turnpike
- Supports high‑speed, free‑flow access for E‑ZPass users
- Serves a heavily traveled 14‑mile Turnpike segment
