Chalk Hill RD over Maacama Creek
Fair Condition111 years old800 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 1 Mi S Of SR 128 |
| Carries | Chalk Hill RD |
| Crosses | Maacama Creek |
| Coordinates | 38.62190, -122.77359 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Concrete |
| Design | Arch - Deck |
| Total Length | 169.9 ft (51.8 m) |
| Max Span | 109.9 ft (33.5 m) |
| Deck Width | 18.0 ft (5.5 m) |
| Deck Area | 284.9 sq m |
| Main Spans | 1 |
| Year Built | 1915 |
Traffic
| Avg Daily Traffic | 800 (2015) |
| Truck Traffic | 1% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is eligible for the National Register |
| Structure Number | 20C0242 |