Mackinac, Straits of
Channel connecting Lake Michigan with Lake Huron. Forming an important waterway between the Upper and Lower peninsulas of Michigan, U.S., the straits are 30 mi (48 km) long and 4 mi (6 km) wide at their narrowest point. They are spanned by the Mackinac Bridge, a 3,800-ft (1,158-m) suspension bridge built in 1957.
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