Client:
NJ Department of Transportation
(NJDOT)
Keyport, New Jersey

Location:
Trenton, New Jersey

Project Cost:
$11,281,000

Completion Date:
July, 1990

Reference
Dan Wolfe
Former Region III Director of Construction
Director of Public Works & Engineering
Hall of Records
Freehold, NJ 07728
(732) 577-8758

This project involved the construction in two phases of a new Rte. 35 bridge over Matawan Creek in the Borough of Keyport and the demolition and removal of the existing Rte. 35 lift bridge. The project involved construction over a tidal and navigable waterway as well as the adjacent wetland area.

The new bridge approach was comprised of 16" steel pipe piles with poured in place concrete caps. The span over the navigable channel was constructed between two massive concrete piers which utilized a precast concrete cofferdam for its base section supported on pipe piles. Approach spans were concrete decks on precast concrete beams whereas the spans over the navigable water were concrete decks on steel girders. The bridge was constructed in two stages. Concrete sheeting was installed between the stages to account for the differential elevation of roadways. All bridge construction was performed in environmentally sensitive wetland areas and in full compliance with Army Corp and NJDEP permits. Coordination of traffic control and staging was particularly difficult on this project. The existing bridge demolition took place adjacent to the active new roadway. Special precautions were implemented to protect the traveling public as well as the navigational traffic.

This project was completed on time and within budget.