Trenton Healdsbrg over Mark West Creek
Fair Condition38 years old1,700 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 0.3 Mi N Of River RD |
| Carries | Trenton Healdsbrg |
| Crosses | Mark West Creek |
| Coordinates | 38.49384, -122.85286 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 183.7 ft (56 m) |
| Max Span | 49.9 ft (15.2 m) |
| Deck Width | 32.8 ft (10 m) |
| Deck Area | 560 sq m |
| Main Spans | 4 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 1,700 (2018) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0239 |