Hurricane Deck BridgeGeolocation: 0, 0

Terracon performed Level I and Level III underwater assessments of four bridge piers and caissons on this 5 span steel truss bridge originally constructed in the 1930's. The bridge is located in Lake of the Ozarks which has a depth varying from 40 ft. to greater than 75 ft. deep. The petrographic examination scope included analysis of 10 concrete cores from four water piers both above the water line (obtained by Terracon, Missouri personnel) and below the water line (obtained by Terracon Cincinnati divers) to determine the extent and type of deterioriation in the piers as part of an overall condition survey of the existing concrete.  The purpose of the evaluation was to determine if the existing bridge piers and caissons could be re-used to support the new bridge to be constructed in 2012. Services also involved: Visual inspection and non-destructive testing using Impact Echo of water elements and bents to observe for any signs of deterioration, scour, debris build-up, etc., both below and above the water line. Extraction of three concrete cores from each pier below the water to be subjected to laboratory testing including:

  • Chloride ion content
  • Petrographic examination
  • Compressive strength testing
  • pH testing

Lake of the Ozarks, MO


Associated Office

Columbia, MOGeolocation: 39.0069, -92.2823
The Columbia office opened in 1997, offering geotechnical and materials testing services. In 2000, environmental services were added, and in 2002 drilling services were added. Columbia is strategically focused on developing the rural Missouri markets, including providing services to each municipality and county in the region. The Columbia staff has grown to approximately 20 employees.