Mackinac Bridge Weekly Traffic: ~1 Million Vehicles

Mackinac Bridge: One of the World's Busiest Suspension Bridges

On average, approximately 1 million vehicles cross the Mackinac Bridge each week.

Traffic Patterns

• Peak: Summer weekends, holidays (Memorial Day, July 4, Labor Day) – can exceed 60,000/day.
• Low: Winter weekdays – ~20,000/day.
• Annual total: ~4.5–5 million vehicles/year.

Bridge Facts

• Opened: November 1, 1957.
• Length: 5 miles (8 km) total; 3,800 ft (1,158 m) main span.
• Connects: Michigan's Upper and Lower Peninsulas (I-75).
• Tolls: $4/car (2024); higher for trucks. MacPass for frequent users.

Managed by the Mackinac Bridge Authority. Real-time traffic at mackinacbridge.org.