Old Sonoma RD over Carneros Creek
Fair Condition130 years old1,959 vehicles/day
Location
| State | California |
| County | Napa |
| Location | 0.2 Mi Ne/o SH 121/12 |
| Carries | Old Sonoma RD |
| Crosses | Carneros Creek |
| Coordinates | 38.25652, -122.34072 |
Condition Ratings
| Overall Condition | Fair |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | Unknown |
Physical Characteristics
| Material | Masonry |
| Design | Arch - Deck |
| Total Length | 35.1 ft (10.7 m) |
| Max Span | 30.5 ft (9.3 m) |
| Deck Width | 28.5 ft (8.7 m) |
| Deck Area | 93.1 sq m |
| Main Spans | 1 |
| Year Built | 1896 (reconstructed 1914) |
Traffic
| Avg Daily Traffic | 1,959 (2012) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | 21C0017 |