Structure 770A0020001 · Sequatchie County, TN
Carries Nfa A002 over Long Branch, Near Sr-399 & Sr-8 Jct..
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 | Tennessee |
| County | Sequatchie |
| Location | Near Sr-399 & Sr-8 Jct. |
| Carries | Nfa A002 |
| Crosses | Long Branch |
| Coordinates | 35.50207, -85.45373 |
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 24.6 ft (7.5 m) |
| Max Span | 21.0 ft (6.4 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 66 sq m |
| Main Spans | 2 |
| Year Built | 2010 |
| Avg Daily Traffic | 30 (2020) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 770A0020001 |
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.