Structure 90A6860001 · Carroll County, TN
Carries Nfa A686 over Roan Creek, 4.7 Mi NW Jct Sr23&hender.
A culvert 23 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 | Tennessee |
| County | Carroll |
| Location | 4.7 Mi NW Jct Sr23&hender |
| Carries | Nfa A686 |
| Crosses | Roan Creek |
| Coordinates | 35.88564, -88.42639 |
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 23.0 ft (7 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 32.5 ft (9.9 m) |
| Deck Area | 69.3 sq m |
| Main Spans | 2 |
| Year Built | 1984 |
| Avg Daily Traffic | 30 (2020) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
| Last Inspection | August 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 090A6860001 |
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.