Nfa B561 over Mad Branch
GoodSullivan County, Tennessee · Midland Dr-W Off SR36 · Structure no. 820B5610001
- Built
- 1965
- 60 years old
- Condition
- Good
- inspected March 2024
- Type
- Culvert
- Concrete Continuous
- Length
- 31 ft
- 3 main spans
- Daily traffic
- 980
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Nfa B561 over Mad Branch is a concrete continuous culvert carrying Nfa B561 over Mad Branch in Sullivan County, Tennessee. It was built in 1965, so it is 60 years old, older 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 980 vehicles a day, roughly 2% of them trucks, projected to reach 1,568 by 2042. The structure is 31 ft (9.4 m) long. 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa B561 over Mad Branch built?
It was built in 1965, making it 60 years old in 2025.
What condition is Nfa B561 over Mad 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 March 2024.
How much traffic does Nfa B561 over Mad Branch carry?
About 980 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa B561 over Mad Branch?
The structure is 31 ft (9.4 m) long with a longest span of 9 ft (2.7 m).
Who owns Nfa B561 over Mad Branch?
It is owned by the City or Municipal Highway Agency.