Construction is under way on a $25 million rehabilitation project on the Delaware River Turnpike Bridge, which connects Burlington County, N.J., with Bucks County, Pa. Parsons Brinckerhoff (PB) completed the design of plans and specifications for the project on behalf of the New Jersey Turnpike Authority. The contractor is Bishop Sanzari.
The construction includes replacement of the bridge’s deck slab and median barrier on the New Jersey side (2,912 ft in length) and repair/rehabilitation of the structural steel. Improvements will also be done on some of the high-maintenance aspects of the bridge such as fatigue-prone details, stringer bearings, deck joints and the maintenance walkway below the bridge.
The project also involved development of a rigorous site-specific seismic evaluation of the main span and spans to the east. This analysis assessed the vulnerability of the bridge for two seismic hazard levels. Based on the results of the analysis, only specific items related to the deck replacement were incorporated into the project at this time. This includes replacement of the bearings at the east abutment, making the deck in the deck girder spans continuous over the four simple spans, and upgrading the new modular expansion joints in the deck for the seismic movements.
As the prime consultant on the project, PB developed the structural and roadway design as well as maintenance and protection of traffic plans. PB was also responsible for the seismic analysis and all environmental permitting.
Construction is scheduled for completion in early 2007.