Powerhouse Access over Muddy Creek
Loudon County, Tennessee · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Powerhouse Access over Muddy 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 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 50 vehicles a day (traffic count year 2021).
- It is one of 39 of the 117 inventoried bridges in Loudon County rated fair (33.3%); 2 (1.7%) 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 → (35.79167, -84.2475)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 20 ft |
| Location | Ft Loudoun Dam |
| NBI structure number | 530A1860001 |
| 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 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.