Ohio Department of Transportation, District 6

Central Ohio
GPR Services

Resource is currently evaluating conditions for 94 bridge decks using Ground Penetrating Radar (GPR) for Ohio Department of Transportation District 6. This efficient and high-speed means non-destructive testing and evaluation is being completed on bridges located throughout Franklin, Delaware, Fayette, Madison, Marion, Morrow, Pickaway and Union Counties.

The field data is collected by use of a survey vehicle equipped with two pulse antennas, a distance-measuring instrument and three-camera alignment system. Plan sheets are being prepared for each bridge deck to identify and summarize delaminations as a percent of the total deck area. GPR findings are used to:

• Investigate possible bridge deck deterioration
• Identify and quantify areas of deterioration
• Detect the condition of each layer of rebar

The Bridge Deck evaluation reports, which include estimated quantities for full depth and partial deck repair, are then used to prioritize funding for the most critical structures.