56th ST W over Big Ditch 071
Fair Condition62 years old2,799 vehicles/day
Location
| State | Montana |
| County | Yellowstone |
| Location | 3m W Billings |
| Carries | 56th ST W |
| Crosses | Big Ditch 071 |
| Coordinates | 45.77621, -108.65921 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 57.7 sq m |
| Main Spans | 1 |
| Year Built | 1964 |
Traffic
| Avg Daily Traffic | 2,799 (2023) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L56506000+05001 |