|Facts and Figures: |
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 Mid-span 295 Ft.
Under clearance at Mid-span 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. Yards.
Total Number of Steel Rivets 4,851,700
Total Workers, at the Bridge Site 3,500
Total Number of Engineers 350
The word "mackinac" being derived from the
Ojibwa Indian word michilimackinac meaning
"island of the great turtle".