Old Sonoma Road over State Route 29
Fair Condition65 years old7,260 vehicles/day
Location
| State | California |
| County | Napa |
| Location | 04-nap-029-10.70-nap |
| Carries | Old Sonoma Road |
| Crosses | State Route 29 |
| Coordinates | 38.28759, -122.30104 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 306.8 ft (93.5 m) |
| Max Span | 65.0 ft (19.8 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 1234.2 sq m |
| Main Spans | 4 |
| Year Built | 1961 |
Traffic
| Avg Daily Traffic | 7,260 (1989) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 8 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 21 0087 |