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Multi-Beam Sonar Infrastructure Mapping Research

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Status:  Complete
Report Date:  10/11/2017


MnDOT hydraulics engineers honed techniques and approaches to underwater sonar investigations. Case studies showed that acoustic 3-D imaging is highly effective in pre- and post-construction surveys, riverbed mapping, substructure modeling and identification of important inspection and safety features for divers. The implementation team produced a sonar imaging policy, a manual for use of the MnDOT-owned equipment and guidance for field inspection using multibeam sonar acoustic imaging.

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