S 200 over N Fork Blackfoot River
FairPowell County, Montana · 4M SE Ovando · Structure no. P00024049+06571
- Built
- 1956
- 69 years old, rebuilt 1985
- Condition
- Fair
- inspected January 2025
- Type
- Tee Beam
- Concrete Continuous
- Length
- 182 ft
- 5 main spans
- Daily traffic
- 2,959
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 200 over N Fork Blackfoot River is a concrete continuous tee beam carrying S 200 over N Fork Blackfoot River in Powell County, Montana. It was built in 1956 and reconstructed in 1985, so it is 69 years old, older 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 5 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 2,959 vehicles a day, roughly 5% of them trucks, projected to reach 3,107 by 2043. The structure is 182 ft (55.5 m) long and 42 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 S 200 over N Fork Blackfoot River built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1985.
What condition is S 200 over N Fork 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 January 2025.
How much traffic does S 200 over N Fork Blackfoot River carry?
About 2,959 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is S 200 over N Fork Blackfoot River?
The structure is 182 ft (55.5 m) long with a longest span of 54 ft (16.5 m) and a deck 42 ft wide.
Who owns S 200 over N Fork Blackfoot River?
It is owned by the State Highway Agency.