Dan Mcnamara Road over Duck Slough
Fair Condition44 years old75 vehicles/day
Location
| State | California |
| County | Merced |
| Location | 1.5 Mi N Sandy Mush Road |
| Carries | Dan Mcnamara Road |
| Crosses | Duck Slough |
| Coordinates | 37.20795, -120.67065 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 6.9 ft (2.1 m) |
| Deck Area | 48 sq m |
| Main Spans | 3 |
| Year Built | 1982 |
Traffic
| Avg Daily Traffic | 75 (1990) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 39C0285 |