IRR - S 24 over Mid Fk Porcupine Creek
GoodValley County, Montana · 11M S Opheim · Structure no. 000000201805736
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected November 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 163 ft
- 3 main spans
- Daily traffic
- 200
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
IRR - S 24 over Mid Fk Porcupine Creek is a prestressed concrete tee beam carrying IRR - S 24 over Mid Fk Porcupine Creek in Valley County, Montana. It was built in 2018, so it is 7 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 200 vehicles a day, roughly 34% of them trucks, projected to reach 210 by 2043. The structure is 163 ft (49.8 m) long and 35 ft wide. If it were closed, the detour would be 13 mi (21 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 | 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 IRR - S 24 over Mid Fk Porcupine Creek built?
It was built in 2018, making it 7 years old in 2025.
What condition is IRR - S 24 over Mid 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 - S 24 over Mid Fk Porcupine Creek carry?
About 200 vehicles per day (2023 count), of which roughly 34% are trucks.
How long is IRR - S 24 over Mid Fk Porcupine Creek?
The structure is 163 ft (49.8 m) long with a longest span of 54 ft (16.5 m) and a deck 35 ft wide.
Who owns IRR - S 24 over Mid Fk Porcupine Creek?
It is owned by the State Highway Agency.