S 81 over Warm Spring Creek
GoodFergus County, Montana · 12M SW Hilger · Structure no. P00081033+06051
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 158 ft
- 1 main span
- Daily traffic
- 377
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 81 over Warm Spring Creek is a prestressed concrete stringer/multi-beam or girder carrying S 81 over Warm Spring Creek in Fergus County, Montana. It was built in 2008, so it is 17 years old, younger than the Montana average of 47 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 377 vehicles a day, roughly 8% of them trucks, projected to reach 396 by 2043. The structure is 158 ft (48.1 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 81 over Warm Spring Creek built?
It was built in 2008, making it 17 years old in 2025.
What condition is S 81 over Warm Spring Creek 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 June 2024.
How much traffic does S 81 over Warm Spring Creek carry?
About 377 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is S 81 over Warm Spring Creek?
The structure is 158 ft (48.1 m) long with a longest span of 125 ft (38 m) and a deck 35 ft wide.
Who owns S 81 over Warm Spring Creek?
It is owned by the State Highway Agency.