I81 over Nfa A257
GoodSullivan County, Tennessee · 2.3 M NE JCT I81&SR36 · Structure no. 82I00810019
- Built
- 1973
- 52 years old, rebuilt 2018
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 142 ft
- 3 main spans
- Daily traffic
- 32,258
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I81 over Nfa A257 is a prestressed concrete stringer/multi-beam or girder carrying I81 over Nfa A257 in Sullivan County, Tennessee. It was built in 1973 and reconstructed in 2018, so it is 52 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 32,258 vehicles a day, roughly 6% of them trucks, projected to reach 57,744 by 2040. The structure is 142 ft (43.3 m) long and 61 ft wide. 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I81 over Nfa A257 built?
It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2018.
What condition is I81 over Nfa A257 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 August 2024.
How much traffic does I81 over Nfa A257 carry?
About 32,258 vehicles per day (2021 count), of which roughly 6% are trucks.
How long is I81 over Nfa A257?
The structure is 142 ft (43.3 m) long with a longest span of 59 ft (18 m) and a deck 61 ft wide.
Who owns I81 over Nfa A257?
It is owned by the State Highway Agency.