Twelfth ST over U.s. Highway 101
Fair Condition64 years old2,500 vehicles/day
Location
| State | California |
| County | Humboldt |
| Location | 01-hum-101-60.49 |
| Carries | Twelfth ST |
| Crosses | U.s. Highway 101 |
| Coordinates | 40.58764, -124.15542 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 196.9 ft (60 m) |
| Max Span | 65.3 ft (19.9 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 624 sq m |
| Main Spans | 4 |
| Year Built | 1962 |
Traffic
| Avg Daily Traffic | 2,500 (2010) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 04 0130 |