S 43 FH 20 over Ruby Creek
FairBeaverhead County, Montana · 11M W Wisdom · Structure no. P00046015+07981
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 60 ft
- 3 main spans
- Daily traffic
- 461
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 43 FH 20 over Ruby Creek is a concrete continuous slab carrying S 43 FH 20 over Ruby Creek in Beaverhead County, Montana. It was built in 1961, so it is 64 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 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 461 vehicles a day, roughly 11% of them trucks, projected to reach 484 by 2043. The structure is 60 ft (18.3 m) long and 30 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 43 FH 20 over Ruby Creek built?
It was built in 1961, making it 64 years old in 2025.
What condition is S 43 FH 20 over Ruby Creek 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 August 2024.
How much traffic does S 43 FH 20 over Ruby Creek carry?
About 461 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is S 43 FH 20 over Ruby Creek?
The structure is 60 ft (18.3 m) long with a longest span of 22 ft (6.7 m) and a deck 30 ft wide.
Who owns S 43 FH 20 over Ruby Creek?
It is owned by the State Highway Agency.