Watmaugh Road over Nathanson Creek
Fair Condition106 years old1,000 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 0.5 Mi E SR 12 |
| Carries | Watmaugh Road |
| Crosses | Nathanson Creek |
| Coordinates | 38.26454, -122.45326 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete |
| Design | Tee Beam |
| Total Length | 34.1 ft (10.4 m) |
| Max Span | 33.1 ft (10.1 m) |
| Deck Width | 33.5 ft (10.2 m) |
| Deck Area | 106.1 sq m |
| Main Spans | 1 |
| Year Built | 1920 (reconstructed 1970) |
Traffic
| Avg Daily Traffic | 1,000 (2015) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0255 |