Statewide Underwater Bridge Inspections in South Carolina

South Carolina

Since 2008 under four contracts, our firm has performed 500+ underwater bridge inspections throughout the state. Responsibilities included the investigation, evaluation, and recommendation of repairs to the bridges’ substructure units (located in the water). Bridges ranged in size from small, completely submerged box culverts to large, river-crossing trusses, and cable stays. After the inspection, a complete report was prepared for each bridge detailing the findings, rating the bridges in both NBIS and BMS, and stating recommended repairs. 3D modeling was used on I-95 NBL over the Great Pee Dee River to assess the progress of channel migration and its encroachment on additional piers. Acoustic imaging was used on bridges over the Cooper and Wando Rivers to document scour for repair recommendations, a project for which we won an Engineering Excellence award from the American Council of Engineering Companies.