Structure 12C0385 · Butte County, CA
Carries Farris RD over Main Drainage Canal, 2 Mi W/o Biggs Gridley RD.
Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.
How ratings work24 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.
| State | California |
| County | Butte |
| Location | 2 Mi W/o Biggs Gridley RD |
| Carries | Farris RD |
| Crosses | Main Drainage Canal |
| Coordinates | 39.39917, -121.75622 |
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 26.6 ft (8.1 m) |
| Deck Area | 59.1 sq m |
| Main Spans | 1 |
| Year Built | 1970 |
| Avg Daily Traffic | 89 (2019) |
| Truck Traffic | 21% |
| Lanes On Bridge | 2 |
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 12C0385 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.