Nfa 1178 (sa 6710) over Flat Creek
Overton County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa 1178 (sa 6710) over Flat Creek in Overton County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1940, making it 85 years old at the 2025 inventory.
- It carries about 545 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 58 of the 78 inventoried bridges in Overton County rated fair (74.4%); 3 (3.8%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 5 to 6, superstructure 5 to 6.
- Its most recent inspection on record is dated December 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 → (36.41168, -85.37493)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 6 | Satisfactory condition |
| Superstructure | 5 | 6 | Satisfactory condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 43 ft |
| Location | 3 Mi North of SR85 |
| NBI structure number | 67F00010001 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Overton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 111 over Collins Branch | 1973 | 24,407 | Fair |
| Fap 111 over Town Creek | 1987 | 21,140 | Fair |
| Fap 111 over Branch | 1988 | 16,383 | Fair |
| Fap 111 over Roaring River | 1987 | 16,383 | Fair |
| Fap 111 over Carr Creek | 1988 | 16,383 | Fair |
| Fap 111 over Spring Creek | 1987 | 15,763 | Fair |
All bridges nearby: Overton County, TN bridge conditions · every bridge in Overton County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.