State Route 20 over Colusa Trough
Fair Condition64 years old6,400 vehicles/day
Location
| State | California |
| County | Colusa |
| Location | 03-col-020-27.83 |
| Carries | State Route 20 |
| Crosses | Colusa Trough |
| Coordinates | 39.19556, -122.06239 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 799.9 ft (243.8 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 2535.5 sq m |
| Main Spans | 20 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 6,400 (2015) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 15 0020 |