I26 Lt LN over Mountcastle Dr(nfa 3975)
FairWashington County, Tennessee · In Johnson City · Structure no. 90I00260038
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Concrete Continuous
- Length
- 192 ft
- 3 main spans
- Daily traffic
- 55,938
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
I26 Lt LN over Mountcastle Dr(nfa 3975) is a concrete continuous box beam or girders - multiple carrying I26 Lt LN over Mountcastle Dr(nfa 3975) in Washington County, Tennessee. It was built in 1975, so it is 50 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 55,938 vehicles a day, roughly 6% of them trucks, projected to reach 70,435 by 2042. The structure is 192 ft (58.6 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I26 Lt LN over Mountcastle Dr(nfa 3975) built?
It was built in 1975, making it 50 years old in 2025.
What condition is I26 Lt LN over Mountcastle Dr(nfa 3975) 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 September 2023.
How much traffic does I26 Lt LN over Mountcastle Dr(nfa 3975) carry?
About 55,938 vehicles per day (2021 count), of which roughly 6% are trucks.
How long is I26 Lt LN over Mountcastle Dr(nfa 3975)?
The structure is 192 ft (58.6 m) long with a longest span of 94 ft (28.6 m) and a deck 44 ft wide.
Who owns I26 Lt LN over Mountcastle Dr(nfa 3975)?
It is owned by the State Highway Agency.