Chippewa County, Michigan, Underwater Bridge Inspections

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Chippewa County contracted with Ayres Associates to provide underwater bridge inspection services for eight bridges throughout the County. Ayres Associates provided a three-person crew, surface-supplied air diving equipment, and a boat. Inspection reports were generated using the Michigan Bridge Inspection System (MBIS). Streambed cross sections at the bridge fascia were obtained and plotted in a spreadsheet graph.

Deliverables included the MBIS Underwater Bridge Inspection Report, photos from the site, notes of any deficiencies found, the streambed cross section plots, and underwater video as required.

Project Information

Client's Name

Chippewa County Road Commission

Location

Chippewa County, MI

Primary Service

Structural Inspection

Client Type

Government-Local