Forest Grove RD over S Fork Mcdonald CR
GoodFergus County, Montana · 6M SW Grassrange · Structure no. 000000202102773
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 65 ft
- 1 main span
- Daily traffic
- 120
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Forest Grove RD over S Fork Mcdonald CR is a prestressed concrete stringer/multi-beam or girder carrying Forest Grove RD over S Fork Mcdonald CR in Fergus County, Montana. It was built in 2021, so it is 4 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 120 vehicles a day, roughly 3% of them trucks, projected to reach 127 by 2043. The structure is 65 ft (19.8 m) long and 28 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Forest Grove RD over S Fork Mcdonald CR built?
It was built in 2021, making it 4 years old in 2025.
What condition is Forest Grove RD over S Fork Mcdonald CR 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 January 2025.
How much traffic does Forest Grove RD over S Fork Mcdonald CR carry?
About 120 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Forest Grove RD over S Fork Mcdonald CR?
The structure is 65 ft (19.8 m) long with a longest span of 61 ft (18.6 m) and a deck 28 ft wide.
Who owns Forest Grove RD over S Fork Mcdonald CR?
It is owned by the County Highway Agency.