State Route 4 WB over Willow Pass Road
Fair Condition51 years old73,000 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 04-cc-004-r16.83 |
| Carries | State Route 4 WB |
| Crosses | Willow Pass Road |
| Coordinates | 38.01376, -121.99784 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 172.6 ft (52.6 m) |
| Max Span | 172.2 ft (52.5 m) |
| Deck Width | 65.9 ft (20.1 m) |
| Deck Area | 1057.3 sq m |
| Main Spans | 1 |
| Year Built | 1975 |
Traffic
| Avg Daily Traffic | 73,000 (2017) |
| Truck Traffic | 7% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28 0246L |