River RD over Mark West Creek
Poor Condition68 years old8,000 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 11.2 Mi W Of SR 116 |
| Carries | River RD |
| Crosses | Mark West Creek |
| Coordinates | 38.48264, -122.83099 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 233.9 ft (71.3 m) |
| Max Span | 84.0 ft (25.6 m) |
| Deck Width | 32.5 ft (9.9 m) |
| Deck Area | 705.9 sq m |
| Main Spans | 3 |
| Year Built | 1958 |
Traffic
| Avg Daily Traffic | 8,000 (2018) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0157 |