NuPump was contracted by Cumberland County, NJ for the rehabilitation of this 3 span structure. The work was primarily reconstruction of the existing parapets, pile jacket repairs and substructure and superstructure concrete repairs. Temporary shielding was designed and erected on the outside of each parapet to prevent the byproducts of the concrete demolition from entering the Cohansey River. Each parapet was removed down to the bridge deck. Much of the demolition was done by hand as workers were careful not to damage the part of the structure that was to remain. Reinforcing steel was doweled into the existing structure and installed for the new parapets. New parapets were then formed and poured with acute attention to the design specifications.
Floating staging was used to gain workers access to the underside and substructure for significant concrete patching repairs and concrete crack injection repairs to the pile cap. Concrete waterproofing was performed on the pile caps after repairs were made.
Another significant portion of the project was the installation of sheet pile across each abutment and along both sides of each approach to prevent the migration of structural backfill. Gabion baskets were installed along the embankment to prevent scouring. The bridge deck and approaches were then paved and new guide rail was installed.