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| Mackinac Bridge 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. Statistics Total Length, including Approaches 26,372 feet Total Length of Steel Superstructure 19,243 feet Length of Suspension Bridge, including Anchorages 8,614 feet 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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ROBINSON LIBRARY --> Technology. --> Bridge Engineering. --> Individual Bridges, A-Z. This page was last updated on 06/11/2011. |
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