I 90 over Sep Huffman Lane
FairDeer Lodge County, Montana · 1.9M N Warm Springs · Structure no. I00090199+06472
- Built
- 1978
- 47 years old
- Condition
- Fair
- inspected February 2024
- Type
- Slab
- Concrete Continuous
- Length
- 78 ft
- 3 main spans
- Daily traffic
- 5,814
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I 90 over Sep Huffman Lane is a concrete continuous slab carrying I 90 over Sep Huffman Lane in Deer Lodge County, Montana. It was built in 1978, so it is 47 years old, younger than the Montana average of 47 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 5,814 vehicles a day, roughly 16% of them trucks, projected to reach 6,308 by 2043. The structure is 78 ft (23.8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I 90 over Sep Huffman Lane built?
It was built in 1978, making it 47 years old in 2025.
What condition is I 90 over Sep Huffman Lane 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 February 2024.
How much traffic does I 90 over Sep Huffman Lane carry?
About 5,814 vehicles per day (2023 count), of which roughly 16% are trucks.
How long is I 90 over Sep Huffman Lane?
The structure is 78 ft (23.8 m) long with a longest span of 30 ft (9.1 m) and a deck 44 ft wide.
Who owns I 90 over Sep Huffman Lane?
It is owned by the State Highway Agency.