// Risk Intelligence
| Risk Score | 7 / 10 High |
| Facility Type | 🌉 Bridge / Critical Crossing |
| Operator / Branch | Mackinac Bridge Authority |
| Host County | Emmet County MI |
| Nearest City | Washington DC |
| Primary Risk Radius | 5 miles |
| Secondary Risk Radius | 15 miles |
// Strategic Significance
The Mackinac Bridge connecting the Upper and Lower Peninsulas of Michigan is the only fixed link between the two Michigan landmasses. It is the longest suspension bridge between anchorages in the Western Hemisphere. Closures during high wind events are common and isolate the Upper Peninsula from the lower. The bridge sits above the Enbridge Line 5 pipeline in the Straits of Mackinac.
// Civilian Impact Assessment
The Upper Peninsula of Michigan with 300,000 residents depends on the Mackinac Bridge as their only fixed link to the lower peninsula. High wind closures are common isolating residents and creating supply chain disruptions.
// Evacuation & Shelter Guidance
I-75, US-2. Emmet County Emergency Management coordinates bridge closure protocols.