Quaintance LN over Boulder Ditch 029
Good Condition16 years old100 vehicles/day
Location
| State | Montana |
| County | Jefferson |
| Location | 13m SE Boulder |
| Carries | Quaintance LN |
| Crosses | Boulder Ditch 029 |
| Coordinates | 46.10901, -111.92278 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 29.9 ft (9.1 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 40.4 ft (12.3 m) |
| Deck Area | 111.9 sq m |
| Main Spans | 1 |
| Year Built | 2010 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L22308006+05001 |