Old Ulm Cascade RD over Sep I 15
Good Condition56 years old100 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | 3m SW Ulm |
| Carries | Old Ulm Cascade RD |
| Crosses | Sep I 15 |
| Coordinates | 47.38856, -111.56492 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 300.9 ft (91.7 m) |
| Max Span | 100.1 ft (30.5 m) |
| Deck Width | 32.2 ft (9.8 m) |
| Deck Area | 898.7 sq m |
| Main Spans | 4 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L07565005+08001 |