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[mak' uh naw] Straits of Mackinac, Michigan
This five-mile-long bridge includes the ninth-longest suspension bridge in the world. It spans the Straits of Mackinac between the Upper and Lower peninsulas of Michigan. Its northern end is at St. Ignace, its southern at Mackinaw City. It was designed by Dr. David B. Steinman. Construction began on May 7, 1954, and officially ended on November 1, 1957. The bridge was dedicated on June 28, 1958.
Total Length, including Approaches 26,372 feet
Total Length of Steel Superstructure 19,243 feet
Length of Suspension Bridge, including Anchorages 8,614 feet (1.63 miles)
Length of Main Suspension Span 3,800 feet
Height of Main Towers above Water 552 feet
Maximum Height of Roadway above Water 199 feet
Diameter of Main Cables 24-1/2 inches
Total Length of Wire in Main Cables 42,000 miles
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This page was last updated on October 31, 2017.