Nfa A178 over Overflow Branch
GoodGreene County, Tennessee · 3.6 M SW of I81-SR172 JCT · Structure no. 300A1780001
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 230
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa A178 over Overflow Branch is a prestressed concrete box beam or girders - multiple carrying Nfa A178 over Overflow Branch in Greene 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 230 vehicles a day, roughly 2% of them trucks, projected to reach 368 by 2041. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 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 A178 over Overflow Branch built?
It was built in 1984, making it 41 years old in 2025.
What condition is Nfa A178 over Overflow Branch 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 January 2025.
How much traffic does Nfa A178 over Overflow Branch carry?
About 230 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A178 over Overflow Branch?
The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.5 m) and a deck 24 ft wide.
Who owns Nfa A178 over Overflow Branch?
It is owned by the County Highway Agency.