GPR Analysis of Sister Bridges in WV

3/1/2022

Two bridges up for deck replacement were selected as subjects for a pilot project. NEXCO and partner company iSee collected data on one sister bridge whose deck was already replaced, and one bridge whose deck had not yet been replaced. As expected, the GPR data showed numerous findings with high severity levels in the older bridge, and a mostly clean dataset in the newer bridge, with a few findings attributed to construction inconsistencies. The sample reports impressed the owner agency and supplemented the inspection work of their on-call engineering contractor.