Hubbard LN over Boulder River 031
Fair Condition25 years old100 vehicles/day
Location
| State | Montana |
| County | Jefferson |
| Location | 4m S Boulder |
| Carries | Hubbard LN |
| Crosses | Boulder River 031 |
| Coordinates | 46.21115, -112.09178 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 105.6 ft (32.2 m) |
| Max Span | 76.1 ft (23.2 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 276.9 sq m |
| Main Spans | 3 |
| Year Built | 2001 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | L22304000+03001 |