State Route 99 NB over Hamlin Slough
Good Condition74 years old14,125 vehicles/day
Location
| State | California |
| County | Butte |
| Location | 03-but-099-25.35 |
| Carries | State Route 99 NB |
| Crosses | Hamlin Slough |
| Coordinates | 39.65858, -121.73456 |
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 | 122.0 ft (37.2 m) |
| Max Span | 34.1 ft (10.4 m) |
| Deck Width | 67.3 ft (20.5 m) |
| Deck Area | 762.6 sq m |
| Main Spans | 4 |
| Year Built | 1952 (reconstructed 1989) |
Traffic
| Avg Daily Traffic | 14,125 (2009) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 521 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 12 0131R |