Interstate 580 over Arroyo Las Positas
Fair Condition54 years old197,000 vehicles/day
Location
| State | California |
| County | Alameda |
| Location | 04-ala-580-11.72 |
| Carries | Interstate 580 |
| Crosses | Arroyo Las Positas |
| Coordinates | 37.70313, -121.75902 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 130.9 ft (39.9 m) |
| Max Span | 50.5 ft (15.4 m) |
| Deck Width | 211.3 ft (64.4 m) |
| Deck Area | 2569.6 sq m |
| Main Spans | 3 |
| Year Built | 1972 (reconstructed 2015) |
Traffic
| Avg Daily Traffic | 197,000 (2020) |
| Truck Traffic | 14% |
| Lanes On Bridge | 13 |
Inspection & Ownership
| Last Inspection | 124 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 33 0085 |