Black Jack RD over Sage Creek 001
Good Condition20 years old100 vehicles/day
Location
| State | Montana |
| County | Liberty |
| Location | 14m E Whitlash |
| Carries | Black Jack RD |
| Crosses | Sage Creek 001 |
| Coordinates | 48.89006, -111.03369 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 21.7 ft (6.6 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 23.8 sq m |
| Main Spans | 2 |
| Year Built | 2006 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L26238001+08001 |