State Route 57 over Diamond Bar BLVD
Fair Condition54 years old198,000 vehicles/day
Location
| State | California |
| County | Los Angeles |
| Location | 07-la-057-r1.94-dmbr |
| Carries | State Route 57 |
| Crosses | Diamond Bar BLVD |
| Coordinates | 33.96814, -117.84890 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 155.8 ft (47.5 m) |
| Max Span | 153.9 ft (46.9 m) |
| Deck Width | 161.1 ft (49.1 m) |
| Deck Area | 2332.2 sq m |
| Main Spans | 1 |
| Year Built | 1972 (reconstructed 1998) |
Traffic
| Avg Daily Traffic | 198,000 (2017) |
| Truck Traffic | 8% |
| Lanes On Bridge | 10 |
| Lanes Under Bridge | 5 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 53 2162 |