I 15 over Sep Depot Hill Road
Fair Condition53 years old1,928 vehicles/day
Location
| State | Montana |
| County | Jefferson |
| Location | Boulder |
| Carries | I 15 |
| Crosses | Sep Depot Hill Road |
| Coordinates | 46.24124, -112.13319 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 83.0 ft (25.3 m) |
| Max Span | 83.0 ft (25.3 m) |
| Deck Width | 44.3 ft (13.5 m) |
| Deck Area | 341.6 sq m |
| Main Spans | 3 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 1,928 (2023) |
| Truck Traffic | 13% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00015164+01432 |