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.
Related Projects
Breakwater Inspection: Portage, Indiana
Ocean Surveys performed a breakwater inspection through multibeam hydrographic and vessel-mounted laser scanning surveys of the Burns Harbor Breakwater in Portage, Indiana. The survey data enhanced the District's ability to assess existing breakwater conditions both above and below the water ...
Read More
Read More
Charting Navigable Waters
Ocean Surveys was a subcontractor to the prime on NOAA’s very first contracted hydrographic survey. Since 1999, OSI has acted as a prime contractor and surveyed thousands of square nautical miles of navigable waters on behalf of NOAA (see table ...
Read More
Read More
Pier Inspection: Thule, Greenland
The U.S. Air Base in Thule, Greenland is the US Military’s northernmost installation with the world's northernmost deep-water port. The port is open for only a few months each year during which time all bulk cargo and fuel bound for ...
Read More
Read More
Wind Farm Development: Atlantic Ocean, Offshore Rhode Island
From 2009 to 2017, OSI provided extensive survey and data analysis for the wind farm development offshore Rhode Island. These services were performed in support of all phases of the design, permitting, and construction of five wind turbines, inter-array, and ...
Read More
Read More
Beach Profiling: Coastal New Jersey
OSI has supported various U.S. Army Corps of Engineers Districts' coastal engineering missions since 1994 with beach profiling surveys. In the vicinity of Ocean City, New Jersey, three-dimensional data were acquired using a combination of topographic, mini sea-sled, and automated ...
Read More
Read More
Reservoir Safe Yield Analysis: Lynchburg, Virginia
To support a reservoir siltation analysis of the Pedlar Reservoir, Ocean Surveys performed a detailed hydrographic survey and calculated the existing capacity. Following completion of the survey, a Digital Terrain Model (DTM) of the reservoir bottom surface was created and ...
Read More
Read More
Power Generation and Distribution: Puerto Cortes, Honduras
Ocean Surveys performed a multi-disciplined marine investigation including hydrographic, geophysical, oceanographic, meteorological and biological studies in the waters off Puerto Cortes in the Gulf of Honduras. This investigation was conducted to collect scientific data in support of the design of ...
Read More
Read More