Structure 79I00400001 · Shelby County, TN
Carries I40 over Miss Rvr CR Ci ST Rr, 4 Mi E Jct I-55 & I-40.
Set by its lowest-rated component: Deck and Superstructure at 5 of 9.
How ratings work9,431 ft end to end, longest span 900 ft: about 26 football fields, or 1.8 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a through arch.
| State | Tennessee |
| County | Shelby |
| Location | 4 Mi E Jct I-55 & I-40 |
| Carries | I40 |
| Crosses | Miss Rvr CR Ci ST Rr |
| Coordinates | 35.15167, -90.07000 |
| Material | Steel Continuous |
| Design | Arch - Thru |
| Total Length | 9431.1 ft (2874.6 m) |
| Max Span | 900.3 ft (274.4 m) |
| Deck Width | 88.9 ft (27.1 m) |
| Deck Area | 77901.7 sq m |
| Main Spans | 2 |
| Year Built | 1973 |
| Avg Daily Traffic | 35,551 (2021) |
| Truck Traffic | 8% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 16 |
| Last Inspection | August 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 79I00400001 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.