State Route 99 SB over Hamlin Slough
Good Condition37 years old14,125 vehicles/day
Location
| State | California |
| County | Butte |
| Location | 03-but-099-25.35 |
| Carries | State Route 99 SB |
| Crosses | Hamlin Slough |
| Coordinates | 39.65843, -121.73472 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 121.1 ft (36.9 m) |
| Max Span | 34.1 ft (10.4 m) |
| Deck Width | 41.7 ft (12.7 m) |
| Deck Area | 468.6 sq m |
| Main Spans | 4 |
| Year Built | 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 0131L |