There are two large finger joints at the towers to accommodate all the expansion of the suspended spans. There are 11 smaller finger joints and 5 sliding joints across the Mackinac Bridge. In addition, there are 13 expansion joints for the south viaduct spans – one for each of these simple spans. This adds up to a total of 31 total joints.
- August Traffic Report
- 21,000 visit the Mackinac Bridge for the '21 annual bridge walk
- 2021 Mackinac Bridge Walk just days away
- July Traffic Report
- Still time to plan your walk: 2021 Mackinac Bridge Walk just a few weeks away