Nfa A251 over Spring Branch
PoorHamblen County, Tennessee · 3 MI West of US25 · Structure no. 320A2510001
- Built
- 1955
- 70 years old
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 23 ft
- 1 main span
- Daily traffic
- 1,260
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Nfa A251 over Spring Branch is a steel stringer/multi-beam or girder carrying Nfa A251 over Spring Branch in Hamblen County, Tennessee. It was built in 1955, so it is 70 years old, older than the Tennessee average of 47.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 1,260 vehicles a day, roughly 2% of them trucks, projected to reach 2,016 by 2041. The structure is 23 ft (7 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 A251 over Spring Branch built?
It was built in 1955, making it 70 years old in 2025.
What condition is Nfa A251 over Spring Branch in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does Nfa A251 over Spring Branch carry?
About 1,260 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A251 over Spring Branch?
The structure is 23 ft (7 m) long with a longest span of 20 ft (6.2 m) and a deck 22 ft wide.
Who owns Nfa A251 over Spring Branch?
It is owned by the City or Municipal Highway Agency.