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Nondestructive Inspection of the Veterans Memorial Bridge

A nondestructive inspection of the Veterans Memorial Bridge deck along State Route 462 in Columbia‐Wrightsville, PA was performed using Ground Penetrating Radar (GPR) combined with high resolution video imaging of the bridge deck surface, all of which were performed at the minimum posted speed. The objectives of the GPR inspection were to provide an up‐to‐date assessment of the physical condition of the concrete deck, including the overall quantity of corrosion induced delaminated concrete within the bridge as well as the depth to the top reinforcement.

A sample of some of the deliverables that we provided from the inspection are shown below.


GPR Delamination Probability Plan-View Mapping


GPR Reinforcement Depth Plan-View Mapping



Surface High Resolution Imaging Plan-View



The use of these multiple mappings provide a comprehensive package of information on the condition of the inspected bridge deck.  Quantities of delaminated concrete and depth to the reinforcing steel along with a detailed image of the deck surface at the time of the survey add invaluable information to the bridge owners without the need to close down any lanes on the bridge. This saves time and money and removes the inconvenience of traffic delays.


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