I 115s over Sep I 15
Fair Condition62 years old2,242 vehicles/day
Location
| State | Montana |
| County | Silver Bow |
| Location | 0.6m W Butte |
| Carries | I 115s |
| Crosses | Sep I 15 |
| Coordinates | 46.00335, -112.56913 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 243.8 ft (74.3 m) |
| Max Span | 61.0 ft (18.6 m) |
| Deck Width | 31.8 ft (9.7 m) |
| Deck Area | 720.7 sq m |
| Main Spans | 2 |
| Year Built | 1964 |
Traffic
| Avg Daily Traffic | 2,242 (2023) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
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 | I00115000+02471 |