Structure 56B00081N · Jefferson County, KY
Carries Ky 1531 over Back Run, 1.25 Mi S Of Ky 1819.
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 | Kentucky |
| County | Jefferson |
| Location | 1.25 Mi S Of Ky 1819 |
| Carries | Ky 1531 |
| Crosses | Back Run |
| Coordinates | 38.11083, -85.47583 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 24.9 ft (7.6 m) |
| Max Span | 12.1 ft (3.7 m) |
| Deck Width | 54.1 ft (16.5 m) |
| Deck Area | 125.4 sq m |
| Main Spans | 2 |
| Year Built | 1955 |
| Avg Daily Traffic | 2,298 (2023) |
| Lanes On Bridge | 2 |
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 056B00081N |
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.