US Highway 101 over Mark West Creek
Fair Condition64 years old62,000 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 04-son-101-26.10 |
| Carries | US Highway 101 |
| Crosses | Mark West Creek |
| Coordinates | 38.50891, -122.77234 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 146.0 ft (44.5 m) |
| Max Span | 32.2 ft (9.8 m) |
| Deck Width | 164.0 ft (50 m) |
| Deck Area | 2,225 sq m |
| Main Spans | 5 |
| Year Built | 1962 (reconstructed 2013) |
Traffic
| Avg Daily Traffic | 62,000 (2012) |
| Truck Traffic | 6% |
| Lanes On Bridge | 7 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20 0180 |