River RD over Hillside
Fair Condition55 years old10,300 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 0.1 Mi E/o Canyon 7 Rd. |
| Carries | River RD |
| Crosses | Hillside |
| Coordinates | 38.51954, -122.97734 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 570.9 ft (174 m) |
| Max Span | 27.2 ft (8.3 m) |
| Deck Width | 18.0 ft (5.5 m) |
| Deck Area | 957 sq m |
| Main Spans | 21 |
| Year Built | 1971 |
Traffic
| Avg Daily Traffic | 10,300 (2015) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0102 |