Interstate 680 over Diablo Road
Fair Condition62 years old192,200 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 04-cc-680-r7.55-dnvl |
| Carries | Interstate 680 |
| Crosses | Diablo Road |
| Coordinates | 37.82282, -121.99334 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 147.0 ft (44.8 m) |
| Max Span | 86.9 ft (26.5 m) |
| Deck Width | 149.0 ft (45.4 m) |
| Deck Area | 2033.9 sq m |
| Main Spans | 3 |
| Year Built | 1964 (reconstructed 1994) |
Traffic
| Avg Daily Traffic | 192,200 (2020) |
| Truck Traffic | 6% |
| Lanes On Bridge | 9 |
| Lanes Under Bridge | 5 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28 0198 |