This job involves the widening of the Garden State Parkway mainline from Milepost 83.5 to 88.5 as part of the overall improvement project that extends to Milepost 99.5. This section will provide for 12 foot wide left and right shoulders, widening of travel lanes to 12 feet wide, incorporation of pavement superelevation and transitions to NJTA standards, roadside treatments and establishment of clear zones consistent with NJTA standards.
This project includes the demolition of 8 existing bridges, construction of 8 new wider bridges, including mechanically stabilized earth (MSE) and cast in place abutment walls, the construction of extensions to 2 existing culverts, and construction of an additional large MSE retaining wall. The bridges are supported on 24” piles, ranging from 45’ to 75’ long, and consist of fabricated steel girders of various depths and lengths with concrete decks. All existing lanes of traffic must be maintained, therefore demolition and construction of the bridges required numerous work stages and also the need to install and remove 2 temporary truss bridges and associated roadway approaches. Each temporary bridge was 3 lanes wide and 150’ long and was rolled into/out of place.
The project also includes 11 new permanent sign structures and 1 temporary sign structure used for Maintenance and Protection of Traffic (MPT), all supported on 48” and 54” diameter drilled shafts. Included as well are drainage improvements, Storm Water Management Basins, signing and striping, delineators, lighting, MPT, and other miscellaneous work necessary and incidental to the completion of the Project.