Structure 12 0208 · Butte County, CA
Carries State Route 70 over Oak Knob Draw, 03-but-070-8.34.
A culvert 21 ft across with 2 openings. 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, so those are drawn as typical for a culvert.
| State | California |
| County | Butte |
| Location | 03-but-070-8.34 |
| Carries | State Route 70 |
| Crosses | Oak Knob Draw |
| Coordinates | 39.42318, -121.60504 |
| Material | Concrete |
| Design | Culvert |
| Total Length | 21.0 ft (6.4 m) |
| Max Span | 10.8 ft (3.3 m) |
| Deck Width | 81.7 ft (24.9 m) |
| Deck Area | 159.4 sq m |
| Main Spans | 2 |
| Year Built | 2022 |
| Avg Daily Traffic | 17,000 (2019) |
| Truck Traffic | 12% |
| Lanes On Bridge | 4 |
| Last Inspection | May 2024 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 12 0208 |
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.