I 15 over Rr-missouri River
Fair Condition58 years old2,201 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | 8m S Cascade |
| Carries | I 15 |
| Crosses | Rr-missouri River |
| Coordinates | 47.17773, -111.81260 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel Continuous |
| Design | Girder and Floorbeam |
| Total Length | 740.5 ft (225.7 m) |
| Max Span | 153.9 ft (46.9 m) |
| Deck Width | 33.8 ft (10.3 m) |
| Deck Area | 2324.7 sq m |
| Main Spans | 3 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 2,201 (2023) |
| Truck Traffic | 16% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00015246+04052 |