State Route 299 over North Fork Mad River
Good Condition57 years old3,500 vehicles/day
Location
| State | California |
| County | Humboldt |
| Location | 01-hum-299-r11.02 |
| Carries | State Route 299 |
| Crosses | North Fork Mad River |
| Coordinates | 40.91329, -123.91647 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 421.9 ft (128.6 m) |
| Max Span | 105.6 ft (32.2 m) |
| Deck Width | 43.6 ft (13.3 m) |
| Deck Area | 1710.4 sq m |
| Main Spans | 4 |
| Year Built | 1969 (reconstructed 1994) |
Traffic
| Avg Daily Traffic | 3,500 (2009) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 04 0194 |