Nfa A321 over Mill Creek
FairRoane County, Tennessee · S Off I40-2.8 M W of CO L · Structure no. 730A2250001
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected April 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 42 ft
- 4 main spans
- Daily traffic
- 110
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa A321 over Mill Creek is a concrete continuous culvert carrying Nfa A321 over Mill Creek in Roane County, Tennessee. It was built in 1965, so it is 60 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 110 vehicles a day, roughly 2% of them trucks, projected to reach 176 by 2042. The structure is 42 ft (12.8 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa A321 over Mill Creek built?
It was built in 1965, making it 60 years old in 2025.
What condition is Nfa A321 over Mill 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 April 2023.
How much traffic does Nfa A321 over Mill Creek carry?
About 110 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A321 over Mill Creek?
The structure is 42 ft (12.8 m) long with a longest span of 10 ft (3 m) and a deck 44 ft wide.
Who owns Nfa A321 over Mill Creek?
It is owned by the County Highway Agency.