Interstate 580 over San Quentin Street
Good Condition69 years old67,000 vehicles/day
Location
| State | California |
| County | Marin |
| Location | 04-mrn-580-2.63-srf |
| Carries | Interstate 580 |
| Crosses | San Quentin Street |
| Coordinates | 37.94354, -122.48022 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 85.0 ft (25.9 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 97.1 ft (29.6 m) |
| Deck Area | 766.6 sq m |
| Main Spans | 3 |
| Year Built | 1957 |
Traffic
| Avg Daily Traffic | 67,000 (2009) |
| Truck Traffic | 7% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 27 0070 |