Mark W Spring RD over Mark West Creek
Good Condition50 years old2,000 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 15.5 Mi N/e Intx Rdwd Hy |
| Carries | Mark W Spring RD |
| Crosses | Mark West Creek |
| Coordinates | 38.54944, -122.72006 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 158.1 ft (48.2 m) |
| Max Span | 44.0 ft (13.4 m) |
| Deck Width | 40.7 ft (12.4 m) |
| Deck Area | 597.7 sq m |
| Main Spans | 4 |
| Year Built | 1976 |
Traffic
| Avg Daily Traffic | 2,000 (2015) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0111 |