Mackinac Bridge and Lightning Poster
70013
The Mackinac Bridge was built in 1957 to connect Michigan’s Upper and Lower Peninsulas. This award winning photograph shows the beautifully lighted bridge against a spectacular northern Michigan thunderstorm.
Total length including approaches: 5 miles. Length of main span: 8,614 ft. (World’s Longest.) Total length of wire in main cables: 42,000 miles. Height of towers above water: 552 ft. Maximum depth of towers below water: 210 ft.
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