Hatchery Road over Mad River
Fair Condition43 years old1,016 vehicles/day
Location
| State | California |
| County | Humboldt |
| Location | Just S/o Blue Lake |
| Carries | Hatchery Road |
| Crosses | Mad River |
| Coordinates | 40.87569, -123.99261 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 270.0 ft (82.3 m) |
| Max Span | 132.9 ft (40.5 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 773.6 sq m |
| Main Spans | 2 |
| Year Built | 1983 |
Traffic
| Avg Daily Traffic | 1,016 (2009) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 04C0060 |