15th ST N-us 87 over Missouri R-rivers Trail
Fair Condition64 years old14,369 vehicles/day
Location
| State | Montana |
| County | Cascade |
| Location | Great Falls-15th ST N |
| Carries | 15th ST N-us 87 |
| Crosses | Missouri R-rivers Trail |
| Coordinates | 47.52123, -111.28175 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Girder and Floorbeam |
| Total Length | 1125.7 ft (343.1 m) |
| Max Span | 185.0 ft (56.4 m) |
| Deck Width | 67.3 ft (20.5 m) |
| Deck Area | 7033.6 sq m |
| Main Spans | 6 |
| Year Built | 1962 (reconstructed 1982) |
Traffic
| Avg Daily Traffic | 14,369 (2023) |
| Truck Traffic | 1% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00010003+05341 |