State Route 99 over Keefers Slough
Good Condition75 years old14,700 vehicles/day
Location
| State | California |
| County | Butte |
| Location | 03-but-099-39.69 |
| Carries | State Route 99 |
| Crosses | Keefers Slough |
| Coordinates | 39.80784, -121.91188 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 75.8 ft (23.1 m) |
| Max Span | 24.0 ft (7.3 m) |
| Deck Width | 42.0 ft (12.8 m) |
| Deck Area | 295.7 sq m |
| Main Spans | 3 |
| Year Built | 1951 |
Traffic
| Avg Daily Traffic | 14,700 (2020) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 422 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 12 0026 |