Nfa E324 over Knob Creek
FairKnox County, Tennessee · Just SW of I75-SR131 Exch · Structure no. 470E3240001
- Built
- 1950
- 75 years old, rebuilt 2006
- Condition
- Fair
- inspected June 2024
- Type
- Tee Beam
- Concrete
- Length
- 33 ft
- 1 main span
- Daily traffic
- 5,446
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa E324 over Knob Creek is a concrete tee beam carrying Nfa E324 over Knob Creek in Knox County, Tennessee. It was built in 1950 and reconstructed in 2006, so it is 75 years old, older than the Tennessee average of 47.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 5,446 vehicles a day, roughly 3% of them trucks, projected to reach 6,944 by 2041. The structure is 33 ft (10.2 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa E324 over Knob Creek built?
It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2006.
What condition is Nfa E324 over Knob Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.
How much traffic does Nfa E324 over Knob Creek carry?
About 5,446 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is Nfa E324 over Knob Creek?
The structure is 33 ft (10.2 m) long with a longest span of 30 ft (9.2 m) and a deck 46 ft wide.
Who owns Nfa E324 over Knob Creek?
It is owned by the County Highway Agency.