Big Porcupine RD over Big Porcupine Creek 011
FairRosebud County, Montana · 8M N Vananda · Structure no. L44108008+02001
- Built
- 2006
- 19 years old
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 65 ft
- 1 main span
- Daily traffic
- 17
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Big Porcupine RD over Big Porcupine Creek 011 is a prestressed concrete tee beam carrying Big Porcupine RD over Big Porcupine Creek 011 in Rosebud County, Montana. It was built in 2006, so it is 19 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 17 vehicles a day, roughly 3% of them trucks, projected to reach 18 by 2043. The structure is 65 ft (19.7 m) long and 26 ft wide. If it were closed, the detour would be 36 mi (58 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 Big Porcupine RD over Big Porcupine Creek 011 built?
It was built in 2006, making it 19 years old in 2025.
What condition is Big Porcupine RD over Big Porcupine Creek 011 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 September 2024.
How much traffic does Big Porcupine RD over Big Porcupine Creek 011 carry?
About 17 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Big Porcupine RD over Big Porcupine Creek 011?
The structure is 65 ft (19.7 m) long with a longest span of 63 ft (19.2 m) and a deck 26 ft wide.
Who owns Big Porcupine RD over Big Porcupine Creek 011?
It is owned by the County Highway Agency.