Hubbard LN over Boulder River 031
FairJefferson County, Montana · 4M S Boulder · Structure no. L22304000+03001
- Built
- 2001
- 24 years old
- Condition
- Fair
- inspected June 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 106 ft
- 3 main spans
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Hubbard LN over Boulder River 031 is a steel stringer/multi-beam or girder carrying Hubbard LN over Boulder River 031 in Jefferson County, Montana. It was built in 2001, so it is 24 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 106 ft (32.2 m) long and 28 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Hubbard LN over Boulder River 031 built?
It was built in 2001, making it 24 years old in 2025.
What condition is Hubbard LN over Boulder River 031 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 June 2024.
How much traffic does Hubbard LN over Boulder River 031 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Hubbard LN over Boulder River 031?
The structure is 106 ft (32.2 m) long with a longest span of 76 ft (23.2 m) and a deck 28 ft wide.
Who owns Hubbard LN over Boulder River 031?
It is owned by the County Highway Agency.