Forty Mile RD over Owl Creek 085
FairBig Horn County, Montana · 2M SE Lodge Grass · Structure no. L02080000+08001
- Built
- 2015
- 10 years old
- Condition
- Fair
- inspected March 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 57 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Forty Mile RD over Owl Creek 085 is a prestressed concrete tee beam carrying Forty Mile RD over Owl Creek 085 in Big Horn County, Montana. It was built in 2015, so it is 10 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 57 ft (17.4 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 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 Forty Mile RD over Owl Creek 085 built?
It was built in 2015, making it 10 years old in 2025.
What condition is Forty Mile RD over Owl Creek 085 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 March 2023.
How much traffic does Forty Mile RD over Owl Creek 085 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Forty Mile RD over Owl Creek 085?
The structure is 57 ft (17.4 m) long with a longest span of 52 ft (15.8 m) and a deck 28 ft wide.
Who owns Forty Mile RD over Owl Creek 085?
It is owned by the County Highway Agency.