Nfa B420 over Branch
GoodWilliamson County, Tennessee · 2.2 MI SE JCT I65&SR96 · Structure no. 940B4200001
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected April 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 33 ft
- 3 main spans
- Daily traffic
- 520
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa B420 over Branch is a concrete continuous culvert carrying Nfa B420 over Branch in Williamson County, Tennessee. It was built in 1992, so it is 33 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 520 vehicles a day, roughly 1% of them trucks, projected to reach 832 by 2039. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 123.7 mi (199 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 | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa B420 over Branch built?
It was built in 1992, making it 33 years old in 2025.
What condition is Nfa B420 over 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 April 2023.
How much traffic does Nfa B420 over Branch carry?
About 520 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Nfa B420 over Branch?
The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).
Who owns Nfa B420 over Branch?
It is owned by the County Highway Agency.