Lower Valley RD - over Boulder River 030
Fair Condition49 years old100 vehicles/day
Location
| State | Montana |
| County | Jefferson |
| Location | 13m SE Boulder |
| Carries | Lower Valley RD - |
| Crosses | Boulder River 030 |
| Coordinates | 46.11361, -111.91959 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 69.9 ft (21.3 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 17.4 ft (5.3 m) |
| Deck Area | 112.9 sq m |
| Main Spans | 1 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L22308006+00001 |