I 15 over Sep County Road
Good Condition57 years old3,145 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | 3m N Ulm |
| Carries | I 15 |
| Crosses | Sep County Road |
| Coordinates | 47.45211, -111.42931 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 79.1 ft (24.1 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 44.3 ft (13.5 m) |
| Deck Area | 325.4 sq m |
| Main Spans | 3 |
| Year Built | 1969 |
Traffic
| Avg Daily Traffic | 3,145 (2023) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00015274+02691 |