IRR - S24 over West Fk Porcupine Creek
GoodValley County, Montana · 18 Mile South Opheim · Structure no. 000000202405733
- Built
- 2024
- 1 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 114 ft
- 2 main spans
- Daily traffic
- 292
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR - S24 over West Fk Porcupine Creek is a prestressed concrete stringer/multi-beam or girder carrying IRR - S24 over West Fk Porcupine Creek in Valley County, Montana. It was built in 2024, so it is 1 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 292 vehicles a day, roughly 23% of them trucks, projected to reach 307 by 2043. The structure is 114 ft (34.7 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR - S24 over West Fk Porcupine Creek built?
It was built in 2024, making it 1 years old in 2025.
What condition is IRR - S24 over West Fk Porcupine 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 November 2024.
How much traffic does IRR - S24 over West Fk Porcupine Creek carry?
About 292 vehicles per day (2023 count), of which roughly 23% are trucks.
How long is IRR - S24 over West Fk Porcupine Creek?
The structure is 114 ft (34.7 m) long with a longest span of 57 ft (17.4 m) and a deck 35 ft wide.
Who owns IRR - S24 over West Fk Porcupine Creek?
It is owned by the State Highway Agency.