Interstate 680 over Monument Boulevard
Poor Condition28 years old235,000 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 04-cc-680-r17.70-plhl |
| Carries | Interstate 680 |
| Crosses | Monument Boulevard |
| Coordinates | 37.94456, -122.05824 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 4 (Poor) |
| Substructure | 7 (Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Box Beam - Multiple |
| Total Length | 552.2 ft (168.3 m) |
| Max Span | 275.9 ft (84.1 m) |
| Deck Width | 165.7 ft (50.5 m) |
| Deck Area | 8499.1 sq m |
| Main Spans | 3 |
| Year Built | 1998 |
Traffic
| Avg Daily Traffic | 235,000 (2009) |
| Truck Traffic | 4% |
| Lanes On Bridge | 11 |
| Lanes Under Bridge | 10 |
Inspection & Ownership
| Last Inspection | 125 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28 0104 |