Labor Day Mackinac Bridge Walk 2024.  — travelers are also reminded that for safety and security, the mackinac bridge will be closed to public traffic on labor day from 6:30 a.m. Join thousands of pedestrians as they participate in a long standing tradition, the labor day bridge walk.

 — those headed to the upper peninsula are reminded the mackinac bridge will be closed to public traffic on labor day, sept.  — if your labor day travel plans include crossing the mighty mac on sept.