Structure 11921 · Jefferson County, AL
Carries I - 459 South Ramp over Stream, Ramp To I - 59 No.
A culvert 25 ft across with 2 openings. 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, so those are drawn as typical for a culvert.
| State | Alabama |
| County | Jefferson |
| Location | Ramp To I - 59 No |
| Carries | I - 459 South Ramp |
| Crosses | Stream |
| Coordinates | 33.34360, -87.02439 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 83.6 sq m |
| Main Spans | 2 |
| Year Built | 1978 |
| Avg Daily Traffic | 4,700 (2024) |
| Truck Traffic | 22% |
| Lanes On Bridge | 1 |
| Last Inspection | January 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 011921 |
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.