Interstate 680 NB over Koopman Road
Good Condition59 years old59,000 vehicles/day
Location
| State | California |
| County | Alameda |
| Location | 04-ala-680-r12.44 |
| Carries | Interstate 680 NB |
| Crosses | Koopman Road |
| Coordinates | 37.60075, -121.87217 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 174.9 ft (53.3 m) |
| Max Span | 65.9 ft (20.1 m) |
| Deck Width | 58.4 ft (17.8 m) |
| Deck Area | 948.7 sq m |
| Main Spans | 3 |
| Year Built | 1967 (reconstructed 1990) |
Traffic
| Avg Daily Traffic | 59,000 (2009) |
| Truck Traffic | 10% |
| Lanes On Bridge | 3 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 33 0386R |