Porter Creek Road over Porter Creek
Fair Condition66 years old5,800 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 24.3 Mi Beging RTE 786 |
| Carries | Porter Creek Road |
| Crosses | Porter Creek |
| Coordinates | 38.54942, -122.66939 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 6 (Satisfactory) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Culvert |
| Total Length | 44.0 ft (13.4 m) |
| Max Span | 21.7 ft (6.6 m) |
| Deck Area | 147.4 sq m |
| Main Spans | 2 |
| Year Built | 1960 |
Traffic
| Avg Daily Traffic | 5,800 (2015) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0119 |