State Route 57 over Birch Street
Good Condition55 years old245,000 vehicles/day
Location
| State | California |
| County | Orange |
| Location | 12-ora-057-20.38-bre |
| Carries | State Route 57 |
| Crosses | Birch Street |
| Coordinates | 33.91776, -117.88068 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 173.9 ft (53 m) |
| Max Span | 170.9 ft (52.1 m) |
| Deck Width | 180.4 ft (55 m) |
| Deck Area | 2,915 sq m |
| Main Spans | 1 |
| Year Built | 1971 (reconstructed 2013) |
Traffic
| Avg Daily Traffic | 245,000 (2020) |
| Truck Traffic | 8% |
| Lanes On Bridge | 11 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 55 0485 |