Auto Tour Route over Main Drain
Fair Condition50 years old25 vehicles/day
Location
| State | California |
| County | Colusa |
| Location | W .8 Mi On Refuge Road |
| Carries | Auto Tour Route |
| Crosses | Main Drain |
| Coordinates | 39.18317, -122.05150 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 143.0 ft (43.6 m) |
| Max Span | 46.9 ft (14.3 m) |
| Deck Width | 16.1 ft (4.9 m) |
| Deck Area | 213.6 sq m |
| Main Spans | 3 |
| Year Built | 1976 |
Traffic
| Avg Daily Traffic | 25 (2024) |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Code 63 |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000011621-00159 |