State Route 580 over Stenmark DR SB On-ramp
Fair Condition70 years old33,500 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 04-cc-580-6.01-rch |
| Carries | State Route 580 |
| Crosses | Stenmark DR SB On-ramp |
| Coordinates | 37.93221, -122.40120 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 263.1 ft (80.2 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 1058.6 sq m |
| Main Spans | 6 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 33,500 (2009) |
| Truck Traffic | 5% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 1 |
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 0141R |