Nfa 1289 (sa 4722) over Big Flat Creek
FairPosted for loadKnox County, Tennessee · SW of SR61-331 Jct- · Structure no. 47S24120009
- Built
- 1940
- 85 years old
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 78 ft
- 1 main span
- Daily traffic
- 508
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa 1289 (sa 4722) over Big Flat Creek is a prestressed concrete stringer/multi-beam or girder carrying Nfa 1289 (sa 4722) over Big Flat Creek in Knox County, Tennessee. It was built in 1940, so it is 85 years old, older than the Tennessee average of 47.4 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.
It carries about 508 vehicles a day, roughly 3% of them trucks, projected to reach 2,096 by 2040. The structure is 78 ft (23.9 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa 1289 (sa 4722) over Big Flat Creek built?
It was built in 1940, making it 85 years old in 2025.
What condition is Nfa 1289 (sa 4722) over Big Flat Creek in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does Nfa 1289 (sa 4722) over Big Flat Creek carry?
About 508 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is Nfa 1289 (sa 4722) over Big Flat Creek?
The structure is 78 ft (23.9 m) long with a longest span of 76 ft (23.2 m) and a deck 28 ft wide.
Who owns Nfa 1289 (sa 4722) over Big Flat Creek?
It is owned by the County Highway Agency.