Brooklyn Bridge Off-Ramp to FDR Drive – Manhattan, NY
The complete removal and replacement of the existing Brooklyn Bridge off-ramp to the Northbound FDR Drive created a safer acceleration lane by installing new foundations in the East River to support the widening of the roadway.
This project required extensive substructure construction in the East River . Working from barges, concrete foundations where constructed on H-Piles inside cofferdams. The foundations were designed for seismic loading, which required heavy rebar fabrication and complicated installation. New steel support columns and steel stringers were used to widen the ramp. Moreover, new exodermic concrete decks were installed and welded to the steel framing. New concrete barriers and an improved lighting system were installed successfully to provide protection and security throughout the area. The existing steel was painted and pedestrian walkways were added along the river.