I 15 over Sep Sawmill Gulch
Fair Condition50 years old1,576 vehicles/day
Location
| State | Montana |
| County | Jefferson |
| Location | 6.2m N Butte |
| Carries | I 15 |
| Crosses | Sep Sawmill Gulch |
| Coordinates | 46.07701, -112.42935 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 123.0 ft (37.5 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 44.0 ft (13.4 m) |
| Deck Area | 502.5 sq m |
| Main Spans | 3 |
| Year Built | 1976 |
Traffic
| Avg Daily Traffic | 1,576 (2023) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00015136+07921 |