South 23rd ST over Interstate 580
Fair Condition39 years old3,000 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 04-cc-580-r2.89-rch |
| Carries | South 23rd ST |
| Crosses | Interstate 580 |
| Coordinates | 37.92154, -122.34732 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 238.8 ft (72.8 m) |
| Max Span | 120.1 ft (36.6 m) |
| Deck Width | 107.0 ft (32.6 m) |
| Deck Area | 2373.3 sq m |
| Main Spans | 2 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 3,000 (2016) |
| Truck Traffic | 20% |
| Lanes On Bridge | 6 |
| Lanes Under Bridge | 8 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28 0273 |