S 141 over Blackfoot River
FairPowell County, Montana · 7M NE Helmville · Structure no. P00041032+04711
- Built
- 2004
- 21 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 195 ft
- 2 main spans
- Daily traffic
- 1,674
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 141 over Blackfoot River is a steel continuous stringer/multi-beam or girder carrying S 141 over Blackfoot River in Powell County, Montana. It was built in 2004, so it is 21 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 1,674 vehicles a day, roughly 8% of them trucks, projected to reach 1,967 by 2043. The structure is 195 ft (59.3 m) long and 37 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 141 over Blackfoot River built?
It was built in 2004, making it 21 years old in 2025.
What condition is S 141 over Blackfoot River 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 July 2023.
How much traffic does S 141 over Blackfoot River carry?
About 1,674 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is S 141 over Blackfoot River?
The structure is 195 ft (59.3 m) long with a longest span of 106 ft (32.3 m) and a deck 37 ft wide.
Who owns S 141 over Blackfoot River?
It is owned by the State Highway Agency.