Nfa B323 over Rock Springs Branch
GoodSullivan County, Tennessee · Melrose Drive · Structure no. 820B3230001
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected January 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 23 ft
- 2 main spans
- Daily traffic
- 50
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa B323 over Rock Springs Branch is a concrete continuous culvert carrying Nfa B323 over Rock Springs Branch in Sullivan 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 50 vehicles a day, roughly 1% of them trucks, projected to reach 80 by 2042. The structure is 23 ft (7 m) long and 34 ft wide. 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 | 8 Very Good | No problems noted. |
| Culvert | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa B323 over Rock Springs Branch built?
It was built in 1992, making it 33 years old in 2025.
What condition is Nfa B323 over Rock Springs 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 2024.
How much traffic does Nfa B323 over Rock Springs Branch carry?
About 50 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is Nfa B323 over Rock Springs Branch?
The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.
Who owns Nfa B323 over Rock Springs Branch?
It is owned by the County Highway Agency.