To address needed capacity, enhance emergency evacuation, address safety/operational issues, and upgrade aging infrastructure, the NJ Turnpike Authority undertook a massive 50-mile widening program from milepost 30 to 80. Due to the size of the program and associated funding and schedule constraints, the Authority employed a multi-phase approach dividing the overall program into three manageable programs with multiple projects in each phase.
For the second phase of the Authority’s planned widening of the Garden State Parkway (GSP) between Interchanges 30 to 80, NV5 provided final design services including the preparation of contract plans and documents for the widening section between Interchanges 52 and 58 (Mile Posts 52.4-57.8) — a distance of 5.4 miles.
Under this widening contract, the existing four-lane GSP with nominal shoulders was widened to six lanes with full shoulders. The proposed widening was generally to the inside median area and paralleling the existing mainline alignment except where environmental or physical constraints were encountered. At these locations, the widening was “split” to both the inside/outside. This project included the design and construction of four new local roadway overpass bridges; extension/widening of two culverts, reconstruction and widening of two local roadways; new overhead sign structures; extensive stormwater management (SWM) conveyance and recharge facilities; and relocation of ITS/fiber optic lines and utility owned telephone and electrical facilities.