Nfa A324 over West Fork Big Bigby CR
Lewis County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A324 over West Fork Big Bigby CR in Lewis County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 2010, making it 15 years old at the 2025 inventory.
- It carries about 10 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 106 of the 136 inventoried bridges in Lewis County rated fair (77.9%); 4 (2.9%) are rated poor.
- 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 → (35.52117, -87.29977)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 38 ft |
| Location | 1 M W Maury Co Line |
| NBI structure number | 510A3240001 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Lewis County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 99 over Little Swan Creek | 2004 | 3,836 | Good |
| Fap 99 over Little Swan Creek | 1996 | 3,836 | Fair |
| Fap 99 over Faucett Branch | 1947 | 3,836 | Fair |
| Fap 99 over Little Grinders Creek | 1996 | 3,836 | Good |
| Fap 99 over Little Swan Creek | 1996 | 3,836 | Good |
| Fap 99 over Swan Creek | 1952 | 3,836 | Good |
All bridges nearby: Lewis County, TN bridge conditions · every bridge in Lewis County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.