Black LN over Surprise Ditch 056
Good Condition13 years old1,206 vehicles/day
Location
| State | Montana |
| County | Ravalli |
| Location | 2m N Hamilton |
| Carries | Black LN |
| Crosses | Surprise Ditch 056 |
| Coordinates | 46.28385, -114.13986 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 27.6 ft (8.4 m) |
| Deck Width | 38.4 ft (11.7 m) |
| Deck Area | 106.5 sq m |
| Main Spans | 1 |
| Year Built | 2013 |
Traffic
| Avg Daily Traffic | 1,206 (2023) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L41318001+04001 |