Access Road over Ash Sluice Pipes
Roane County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Access Road over Ash Sluice Pipes in Roane 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 1975, making it 50 years old at the 2025 inventory.
- It carries about 200 vehicles a day (traffic count year 2021).
- It is one of 78 of the 159 inventoried bridges in Roane County rated fair (49.1%); 4 (2.5%) 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 September 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 → (35.90056, -84.51833)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 47 ft |
| Location | Kingston Fossil Plant |
| NBI structure number | 730B2000001 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 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 Roane County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I40 over Youngs Creek | 1969 | 51,799 | Fair |
| I40 Rt Ln over SR 58 | 1969 | 51,799 | Fair |
| I40 Lf Ln over SR 58 | 1969 | 51,799 | Fair |
| I40 Rt Ln over Nfa 1226 | 1969 | 49,070 | Fair |
| I40 Lf Ln over Nfa 1226 | 1969 | 49,070 | Fair |
| I40 Rt Ln over Clinch River & Nfa A774 | 1960 | 49,070 | Fair |
All bridges nearby: Roane County, TN bridge conditions · every bridge in Roane County · Tennessee bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.