I 315s over Int I 15
Fair Condition59 years old12,651 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | Great Falls |
| Carries | I 315s |
| Crosses | Int I 15 |
| Coordinates | 47.48512, -111.34495 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 297.6 ft (90.7 m) |
| Max Span | 71.5 ft (21.8 m) |
| Deck Width | 54.1 ft (16.5 m) |
| Deck Area | 1496.5 sq m |
| Main Spans | 5 |
| Year Built | 1967 |
Traffic
| Avg Daily Traffic | 12,651 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | I00315000+00001 |