Multi-Beam Sonar Infrastructure Mapping Research

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:

• Report #2017-40
• 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: