Nfa A446 over I75 Sbl
FairMcMinn County, Tennessee · 5 MI from SR2 · Structure no. 54I00750049
- Built
- 1971
- 54 years old
- Condition
- Fair
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 173 ft
- 3 main spans
- Daily traffic
- 242
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Nfa A446 over I75 Sbl is a prestressed concrete box beam or girders - multiple carrying Nfa A446 over I75 Sbl in McMinn County, Tennessee. It was built in 1971, so it is 54 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 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 242 vehicles a day, roughly 3% of them trucks, projected to reach 387 by 2042. The structure is 173 ft (52.7 m) long and 32 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nfa A446 over I75 Sbl built?
It was built in 1971, making it 54 years old in 2025.
What condition is Nfa A446 over I75 Sbl 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 April 2024.
How much traffic does Nfa A446 over I75 Sbl carry?
About 242 vehicles per day (2021 count), of which roughly 3% are trucks.
How long is Nfa A446 over I75 Sbl?
The structure is 173 ft (52.7 m) long with a longest span of 87 ft (26.5 m) and a deck 32 ft wide.
Who owns Nfa A446 over I75 Sbl?
It is owned by the State Highway Agency.