Nfa A870 over Elk River
FairLincoln County, Tennessee · 6.5 M. Nw. Taft. · Structure no. 520A4870003
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected July 2023
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 347 ft
- 4 main spans
- Daily traffic
- 80
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Nfa A870 over Elk River is a prestressed concrete continuous box beam or girders - single or spread carrying Nfa A870 over Elk River in Lincoln County, Tennessee. It was built in 1983, so it is 42 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 80 vehicles a day, roughly 2% of them trucks, projected to reach 128 by 2041. The structure is 347 ft (105.8 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 A870 over Elk River built?
It was built in 1983, making it 42 years old in 2025.
What condition is Nfa A870 over Elk River 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 July 2023.
How much traffic does Nfa A870 over Elk River carry?
About 80 vehicles per day (2020 count), of which roughly 2% are trucks.
How long is Nfa A870 over Elk River?
The structure is 347 ft (105.8 m) long with a longest span of 87 ft (26.5 m) and a deck 28 ft wide.
Who owns Nfa A870 over Elk River?
It is owned by the County Highway Agency.