// Risk Intelligence
| Risk Score | 8 / 10 High |
| Facility Type | 🌉 Bridge / Critical Crossing |
| Operator / Branch | Tennessee and Arkansas Departments of Transportation |
| Host County | Shelby County TN |
| Nearest City | Washington DC |
| Primary Risk Radius | 5 miles |
| Secondary Risk Radius | 25 miles |
// Strategic Significance
The I-40 Hernando de Soto Bridge over the Mississippi River at Memphis was closed in May 2021 when inspectors discovered a significant crack in a steel beam threatening structural integrity. The closure forced all I-40 traffic onto the I-55 bridge creating massive freight and commercial disruption. The bridge is a critical node on the I-40 transcontinental freight corridor connecting California to the East Coast. The New Madrid Seismic Zone creates serious earthquake risk for all Mississippi River bridges at Memphis.
// Civilian Impact Assessment
Shelby County with 940,000 residents. The 2021 bridge crack closure disrupted I-40 transcontinental freight for months. The New Madrid Seismic Zone could damage multiple Mississippi River bridges simultaneously. Memphis bridges are critical to east-west US freight movement.
// Evacuation & Shelter Guidance
I-40, I-55, Mississippi River. Shelby County Emergency Management coordinates bridge closure New Madrid earthquake and freight disruption protocols.