Structure 820B0740001 · Sullivan County, TN
Carries Nfa B074 over Darr Creek, At Co Line Btwn 11e&sr36.
A culvert 21 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 | Sullivan |
| Location | At Co Line Btwn 11e&sr36 |
| Carries | Nfa B074 |
| Crosses | Darr Creek |
| Coordinates | 36.42532, -82.37497 |
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 20.7 ft (6.3 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 38.4 sq m |
| Main Spans | 2 |
| Year Built | 1964 |
| Avg Daily Traffic | 75 (2020) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Last Inspection | March 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 820B0740001 |
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.