I 15 Frontage RD over Boulder River 042
Fair Condition41 years old100 vehicles/day
Location
| State | Montana |
| County | Jefferson |
| Location | Basin |
| Carries | I 15 Frontage RD |
| Crosses | Boulder River 042 |
| Coordinates | 46.26953, -112.26621 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 106.0 ft (32.3 m) |
| Max Span | 105.0 ft (32 m) |
| Deck Width | 27.2 ft (8.3 m) |
| Deck Area | 268.1 sq m |
| Main Spans | 1 |
| Year Built | 1985 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L22099009+02001 |