Llano RD over Colgan Creek
Poor Condition47 years old1,750 vehicles/day
Location
| State | California |
| County | Sonoma |
| Location | 1.1 Mi N Of SH 116 |
| Carries | Llano RD |
| Crosses | Colgan Creek |
| Coordinates | 38.37353, -122.76864 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 4 (Poor) |
| Superstructure | 4 (Poor) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 66.6 ft (20.3 m) |
| Max Span | 32.2 ft (9.8 m) |
| Deck Width | 32.5 ft (9.9 m) |
| Deck Area | 201.0 sq m |
| Main Spans | 2 |
| Year Built | 1979 |
Traffic
| Avg Daily Traffic | 1,750 (2018) |
| Truck Traffic | 5% |
| 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 | 20C0234 |