Nfa A099 over Mill Creek
Grainger County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfa A099 over Mill Creek in Grainger County, Tennessee, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1975, making it 50 years old at the 2025 inventory.
- It carries about 100 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 60 of the 88 inventoried bridges in Grainger County rated fair (68.2%); 4 (4.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2023, 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 → (36.37228, -83.40208)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 28 ft |
| Location | East of SR131 |
| NBI structure number | 290A0990001 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Tennessee department of transportation.
Busiest bridges in Grainger County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Fap 1 over Meadow Creek | 1945 | 13,327 | Fair |
| Fap 1 over SR 32 | 1998 | 13,327 | Good |
| Fap 32 over Briar Fork Creek | 1942 | 10,846 | Fair |
| Fap 1 over Branch | 2003 | 10,315 | Good |
| Fap 32 over Indian Creek | 1981 | 8,247 | Fair |
| Fap 32 over Clinch River | 2009 | 8,247 | Good |
All bridges nearby: Grainger County, TN bridge conditions · every bridge in Grainger County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.