Nfa A408 over Greenbrier Creek
GoodCocke County, Tennessee · W of SR73-1 M SW of Cosby · Structure no. 150A4080005
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected October 2024
- Type
- Slab
- Concrete Continuous
- Length
- 32 ft
- 2 main spans
- Daily traffic
- 150
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa A408 over Greenbrier Creek is a concrete continuous slab carrying Nfa A408 over Greenbrier Creek in Cocke County, Tennessee. It was built in 1984, so it is 41 years old, younger than the Tennessee average of 47.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 150 vehicles a day, roughly 2% of them trucks, projected to reach 240 by 2040. The structure is 32 ft (9.8 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa A408 over Greenbrier Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is Nfa A408 over Greenbrier Creek in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.
How much traffic does Nfa A408 over Greenbrier Creek carry?
About 150 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A408 over Greenbrier Creek?
The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.6 m) and a deck 27 ft wide.
Who owns Nfa A408 over Greenbrier Creek?
It is owned by the County Highway Agency.