Structure 21631 · Montgomery County, AL
Carries Decatur St. over Genetta Ditch, 600 S Of I-85.
Set by its lowest-rated component: Superstructure and Substructure at 8 of 9.
How ratings work24 ft end to end. 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 channel-beam bridge.
| State | Alabama |
| County | Montgomery |
| Location | 600 S Of I-85 |
| Carries | Decatur St. |
| Crosses | Genetta Ditch |
| Coordinates | 32.36620, -86.30140 |
| Material | Concrete |
| Design | Channel Beam |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 24.0 ft (7.3 m) |
| Deck Width | 40.0 ft (12.2 m) |
| Deck Area | 89.1 sq m |
| Main Spans | 1 |
| Year Built | 2019 |
| Lanes On Bridge | 3 |
| Last Inspection | March 2023 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 021631 |
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.