Irrcounty Road 380 over Smoke Creek 017
Fair Condition69 years old100 vehicles/day
Location
| State | Montana |
| County | Roosevelt |
| Location | 20m N Brockton |
| Carries | Irrcounty Road 380 |
| Crosses | Smoke Creek 017 |
| Coordinates | 48.42669, -104.92648 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 109.9 ft (33.5 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 26.6 ft (8.1 m) |
| Deck Area | 271.4 sq m |
| Main Spans | 3 |
| Year Built | 1957 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L43380010+07001 |