Chalk Hill RD over Franz Creek
Good Condition61 years old850 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 3 Mi South SR 128 |
| Carries | Chalk Hill RD |
| Crosses | Franz Creek |
| Coordinates | 38.61038, -122.77273 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 155.8 ft (47.5 m) |
| Max Span | 44.0 ft (13.4 m) |
| Deck Width | 32.8 ft (10 m) |
| Deck Area | 475 sq m |
| Main Spans | 4 |
| Year Built | 1965 |
Traffic
| Avg Daily Traffic | 850 (2015) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 721 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 20C0329 |