Mackinac Bridge - Mackinaw City/St. Ignace, MI
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S5280ft
N 45° 47.268 W 084° 43.930
16T E 676272 N 5072972
The world's longest suspension bridge between cable anchorages connects Michigan's Upper and Lower peninnsulas. The total length of the bridge is 5 miles, with the suspension anchorages separated by 1.6 miles.
Waymark Code: WM1VY4
Location: Michigan, United States
Date Posted: 07/16/2007
Views: 156
Total Length of Bridge (5 Miles) 26,372 Ft.
Length of Suspension Bridge (including Anchorages) 8,614 Ft.
Length of Main Span (between Main Towers) 3,800 Ft
Height of Main Towers above Water 552 Ft.
Maximum Depth of Water at Midspan 295 Ft.
Underclearance at Midspan for Ships 155 Ft.
Total Length of Wire in Main Cables 42,000 Miles
Maximum Tension in Each Cable 16,000 Tons
Weight of Cables 11,840 Tons
Diameter of Main Cables 24 1/2 Inches
Total Concrete in Bridge 466,300 Cu. Yds.
Total Number of Steel Rivets 4,851,700
Total workers at the Bridge Site 3,500
Total Number of Engineers 350
Location:
Between Mackinaw City and St. Ignace, MI
Type of structure/site: Suspension Bridge
Date of Construction: 5/7/1954-11/1/1957
Engineer/Architect/Builder etc.: David B. Steinman
Engineering Organization Listing: National Society of Professional Engineers
Primary Web Site: [Web Link]
Secondary Web Site: [Web Link]
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