Porter Creek Road over Porter Creek
Good Condition12 years old7,300 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 7.1 Mi NE Mark West & 101 |
| Carries | Porter Creek Road |
| Crosses | Porter Creek |
| Coordinates | 38.55682, -122.69454 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 160.1 ft (48.8 m) |
| Max Span | 157.2 ft (47.9 m) |
| Deck Width | 62.0 ft (18.9 m) |
| Deck Area | 922.3 sq m |
| Main Spans | 1 |
| Year Built | 2014 |
Traffic
| Avg Daily Traffic | 7,300 (2015) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0572 |