Collins helped develop a first-of-its-kind bridge maintenance preservation design for ten bridges on the I-95 and I-195 interchange corridors. Our team provided the unique specifications-based design of high-quality bridge maintenance activities that generally included bridge washing, concrete sealing, deck joint replacement, concrete superstructure and deck repairs, scupper and downspout repairs, and bituminous concrete milling and paving. Deliverables included preparing 90% and PS&E specifications, traffic management plans, construction cost estimates, and supplemental permitting documentation. In 2019, under this contract, a seven-span bridge over the tidally influenced river founded on pile-supported reinforced concrete piers with granite facing was found to have significant scour that exposed the concrete tremie seals at two piers and was undergoing significant erosion, exposing several steel H-piles.