The Delaware Department of Transportation awarded Boswell Engineering four (4) 3-year, open-ended contracts to perform underwater inspections of high-clearance bridges and low-clearance bridges through out the State. Diving Inspections were performed on more than 700 substructure units (SSU) encompassing 300+ bridges spanning waterways. The inspection of the low-clearance bridges included a full inspection (above and below water) of all substructure and superstructure elements. All inspections were performed in accordance with NBIS standards with the inspections of the low-clearance structures conforming to the PONTIS Bridge Management System requirements.