Structure 12321 · Mobile County, AL
Carries I-65 SB over Mobile River Delta, 5.5 Mi N E US 43.
Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.
How ratings work32,098 ft end to end: about 89 football fields, or 6.1 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 | Alabama |
| County | Mobile |
| Location | 5.5 Mi N E US 43 |
| Carries | I-65 SB |
| Crosses | Mobile River Delta |
| Coordinates | 30.90923, -87.97601 |
| Material | Steel |
| Design | Arch - Thru |
| Total Length | 32098.4 ft (9783.6 m) |
| Max Span | 799.9 ft (243.8 m) |
| Deck Width | 41.7 ft (12.7 m) |
| Deck Area | 124251.7 sq m |
| Main Spans | 1 |
| Year Built | 1980 |
| Avg Daily Traffic | 12,571 (2023) |
| Truck Traffic | 28% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
| Last Inspection | November 2024 |
| 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 | 012321 |
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.