Nfa B485 over Grubb Creek
Loudon County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa B485 over Grubb Creek in Loudon 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 1965, making it 60 years old at the 2025 inventory.
- It carries about 550 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 39 of the 117 inventoried bridges in Loudon County rated fair (33.3%); 2 (1.7%) 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 → (35.87917, -84.33293)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 27 ft |
| Location | 7.5 M. NW. Lenoir City. |
| NBI structure number | 530A2350001 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Loudon County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I75 Ramp to I40 WB over I40 Ebl | 1964 | 58,302 | Good |
| I75 over SR 1 | 1964 | 58,302 | Good |
| I75 over SR 1 | 1964 | 58,302 | Good |
| I75 over Hope Creek | 1972 | 58,302 | Fair |
| I75 over I75 Rl / E. Hotchkiss CR | 1972 | 55,134 | Fair |
| I75 over I75 Ll / E. Hotchkiss CR | 1972 | 55,134 | Fair |
All bridges nearby: Loudon County, TN bridge conditions · every bridge in Loudon County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.