The width of the roadway is 54 feet. The outside lanes are 12 feet wide (2), the inside lanes are 11 feet wide (2), the center mall is 2 feet wide, and the catwalk, curb and rail width is 3 feet on each side – totaling 54 feet. The stiffening truss width in the suspended span is 68 feet wide making it wider than the roadway it supports.
- December Traffic Report
- November Traffic Report
- Piece of Mackinac Bridge now resides at South Pole
- October Traffic Report
- Mackinac Bridge 30-minute nighttime closures Nov. 29-30 for backup power system upgrade