Silverado Trail over Napa River Overflow
Good Condition96 years old5,450 vehicles/day
Location
| State | California |
| County | Napa |
| Location | 0.2 Mi North Hardman RD |
| Carries | Silverado Trail |
| Crosses | Napa River Overflow |
| Coordinates | 38.34739, -122.28324 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 85.6 ft (26.1 m) |
| Max Span | 14.1 ft (4.3 m) |
| Deck Width | 41.0 ft (12.5 m) |
| Deck Area | 326.2 sq m |
| Main Spans | 6 |
| Year Built | 1930 (reconstructed 1958) |
Traffic
| Avg Daily Traffic | 5,450 (2005) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 21C0016 |