The length of the Mackinac Bridge is 4.994582 miles (8,038
metres).
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A suspension bridge.
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I am unfamiliar with the Machinaw Bridge, so I assume you are
talking about the Mackinac bridge? The third largest suspension
bridge in the world.
The Mackinac bridge has common nicknames such as: "Big Mac" or
"Mighty Mac"
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The longest bridge in Michigan, the Mackinac Bridge, links
Michigan's upper and lower peninsulas. The Mackinac Bridge is the
longest bridge in the western hemisphere.