Interstate 680 SB over Mt Diablo Boulevard
Fair Condition31 years old87,700 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 04-cc-680-14.22-wlc |
| Carries | Interstate 680 SB |
| Crosses | Mt Diablo Boulevard |
| Coordinates | 37.89621, -122.07067 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 204.4 ft (62.3 m) |
| Max Span | 104.0 ft (31.7 m) |
| Deck Width | 97.4 ft (29.7 m) |
| Deck Area | 1850.3 sq m |
| Main Spans | 2 |
| Year Built | 1995 |
Traffic
| Avg Daily Traffic | 87,700 (2017) |
| Truck Traffic | 6% |
| Lanes On Bridge | 5 |
| Lanes Under Bridge | 6 |
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 0128L |