State Route 99 over Hamilton Slough
Good Condition76 years old11,050 vehicles/day
Location
| State | California |
| County | Butte |
| Location | 03-but-099-8.21 |
| Carries | State Route 99 |
| Crosses | Hamilton Slough |
| Coordinates | 39.42255, -121.68808 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 80.1 ft (24.4 m) |
| Max Span | 22.0 ft (6.7 m) |
| Deck Width | 42.0 ft (12.8 m) |
| Deck Area | 312.3 sq m |
| Main Spans | 4 |
| Year Built | 1950 |
Traffic
| Avg Daily Traffic | 11,050 (2020) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 12 0003 |