Project Overview
Collins provided services for the complete underwater substructure inspection of SDDOT’s eight bridges spanning the Missouri River, the Meridian Bridge in Yankton, and the railroad bridge at Chamberlain.
Collins used experienced diving teams and equipment necessary to complete all inspections, and then reported the results of these inspections to SDDOT in a comprehensive report. The report detailed the general condition of each substructure and channel, identified areas of damage and deterioration, and outlined the required corrective action.
Underwater acoustic imaging was also required in cases of significant scour, undermining of footings, and major defects.