S 69 over Int Boulder I 15
Fair Condition53 years old100 vehicles/day
Location
| State | Montana |
| County | Jefferson |
| Location | Boulder |
| Carries | S 69 |
| Crosses | Int Boulder I 15 |
| Coordinates | 46.24660, -112.11891 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 261.8 ft (79.8 m) |
| Max Span | 129.9 ft (39.6 m) |
| Deck Width | 46.3 ft (14.1 m) |
| Deck Area | 1125.2 sq m |
| Main Spans | 2 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 224 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00069038+03961 |