Forest Road over Griffin Creek
GoodFlathead County, Montana · Great Griffin Road · Structure no. 011008000000097
- Built
- 1980
- 45 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 55 ft
- 1 main span
- Daily traffic
- 20
- 1992 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Forest Road over Griffin Creek is a prestressed concrete stringer/multi-beam or girder carrying Forest Road over Griffin Creek in Flathead County, Montana. It was built in 1980, so it is 45 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 20 vehicles a day, projected to reach 30 by 2045. The structure is 55 ft (16.8 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Forest Road over Griffin Creek built?
It was built in 1980, making it 45 years old in 2025.
What condition is Forest Road over Griffin 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 July 2024.
How much traffic does Forest Road over Griffin Creek carry?
About 20 vehicles per day (1992 count).
How long is Forest Road over Griffin Creek?
The structure is 55 ft (16.8 m) long with a longest span of 54 ft (16.4 m) and a deck 16 ft wide.
Who owns Forest Road over Griffin Creek?
It is owned by the U.S. Forest Service.