Bridge Scour Investigation: Straits of Mackinac, Michigan
Mackinac Bridge, Authority
The Mackinac Bridge is among the 20 largest suspension bridges in the world. It has a total length of approximately five miles and a main span of 3,800 feet.
As part of a scour investigation, Ocean Surveys performed a multibeam hydrographic survey of the lakebed adjacent to thirty (30) bridge piers. Survey data were used to generate detailed Digital Terrain Models of the lakebed around each pier.
Mackinac Fig. 1
Various visualizations resulting from a multibeam survey of the Mackinac Bridge area lakebed. Note remnant submerged structure adjacent to bridge pier.
Mackinac Fig. 2
One of the thirty Mackinac Bridge piers investigated for scour assessment using OSI's 455kHz multibeam sonar.
Mackinac Fig. 3
Plan view depth contour presentation of area adjacent to the pier.
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