Leo Frigo Memorial Bridge Tested with Impact-Echo to Assess Overlay Condition
Impact Echo is another NDE testing technique that Infrasense uses…
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Network-Level Bridge Deck Evaluations in Wisconsin
Infrasense, through multiple work orders, has conducted infrared thermography (IR, per ASTM D4788-03) and ground penetrating radar (GPR, per ASTM D6087-08) surveys on over 800 decks representing 7.7 million sq. ft. in Wisconsin’s SW, NC, NW, NE, and SE regions. In 2017, Infrasense conducted surveys on over just over 130 decks. All GPR data collection has been carried out at driving speed without lane closures, while the IR data has been collected using a rolling closure system. The GPR and IR data collection efforts are supported by OMNNI Associates of Appleton, Wisconsin.
Level 1 evaluations were carried out for each deck to determine deterioration quantities and to identify decks with significant deterioration quantities. These decks were selected for a more detailed Level 2 evaluation, including the preparation of plan-view maps showing delaminated and deteriorated deck areas.
