Mackinaw Bridge or as some call it

The "Mighty Mac"

Facts about the Mackinaw Bridge

Real Length of Bridge                                      26,372 feet (5 miles)

Total length of steel superstructure                 19,243 feet

Length of suspension bridge                             8,614 feet

Length of main span (between towers)             3,800 feet

Height of main towers above water                 552 feet

Maximum depth of water at midspan                295 feet

Height of roadway above water at midspan    199 feet

Total length of wire in main cables                 42,000 miles

Number of wires in each cable                             12,580

Weight of cables                                                11,840 tons

Diameter of main cables                                     24 1.2 inches

Total concrete in bridge                                 466,300 cubic yards

Total weight of bridge                                 1,024,500 tons

Total number of steel rivets                         1,016,600

Total number of engineering drawings               4,000

Total number of blueprints                               85,000

Mackinaw bridge was officially opened  to traffic November 1, 1957