Multi-Beam Sonar Infrastructure Mapping Research Status: CompleteReport Date: 10/11/2017 Summary: 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. Final Deliverables: Multi-Beam Sonar Infrastructure Mapping Research (Report #2017-40) Putting Research into Practice: 3D Mapping of Bridges and Riverbeds with Underwater Sonar (Research Summary) Related Materials: 3D sonar scans reveal what is hidden underwater (MnDOT Newsline) (News/Publication Article) Video of case studies (Video/Webinar) Related Research:
