Nfa 1001 (sa 9418) over Allen Branch
GoodWilliamson County, Tennessee · 2.2 MI SE JCT SR96&SR100 · Structure no. 94F00040001
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected June 2023
- Type
- Culvert
- Concrete
- Length
- 26 ft
- 1 main span
- Daily traffic
- 745
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa 1001 (sa 9418) over Allen Branch is a concrete culvert carrying Nfa 1001 (sa 9418) over Allen Branch in Williamson County, Tennessee. It was built in 1988, so it is 37 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 745 vehicles a day, roughly 1% of them trucks, projected to reach 846 by 2041. The structure is 26 ft (7.9 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 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 |
|---|---|---|
| Channel and channel protection | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa 1001 (sa 9418) over Allen Branch built?
It was built in 1988, making it 37 years old in 2025.
What condition is Nfa 1001 (sa 9418) over Allen 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 June 2023.
How much traffic does Nfa 1001 (sa 9418) over Allen Branch carry?
About 745 vehicles per day (2021 count), of which roughly 1% are trucks.
How long is Nfa 1001 (sa 9418) over Allen Branch?
The structure is 26 ft (7.9 m) long with a longest span of 16 ft (4.9 m) and a deck 26 ft wide.
Who owns Nfa 1001 (sa 9418) over Allen Branch?
It is owned by the County Highway Agency.