Old US 10 over Big Ditch 051
Poor Condition94 years old2,489 vehicles/day
Location
| State | Montana |
| County | Yellowstone |
| Location | 4m W Laurel |
| Carries | Old US 10 |
| Crosses | Big Ditch 051 |
| Coordinates | 45.66842, -108.85797 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 3 (Serious) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 65.0 ft (19.8 m) |
| Max Span | 30.8 ft (9.4 m) |
| Deck Width | 25.3 ft (7.7 m) |
| Deck Area | 152.5 sq m |
| Main Spans | 2 |
| Year Built | 1932 |
Traffic
| Avg Daily Traffic | 2,489 (2023) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L56787001+02001 |