Nfa A278 over Brimstone Creek
Scott County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A278 over Brimstone Creek in Scott County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 40 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 80 of the 111 inventoried bridges in Scott County rated fair (72.1%); 5 (4.5%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated September 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (36.25265, -84.50635)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 40 ft |
| Location | 8.8 M SE of Us27-sr52 Jct |
| NBI structure number | 760A2200003 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | September 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Scott County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 29 over Sulphur Creek | 1992 | 12,876 | Fair |
| Fap 29 over Cherry Fork Creek | 1995 | 12,876 | Fair |
| Nfa A583 over Nigs Creek | 1924 | 12,550 | Fair |
| Fap 29 over Pine Creek | 1986 | 12,179 | Fair |
| Fap 29 over Sou Rwy & Nfa A168 | 1996 | 12,179 | Fair |
| Fap 29 over Nigs Creek | 1997 | 12,179 | Fair |
All bridges nearby: Scott County, TN bridge conditions · every bridge in Scott County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.