State Route 4 over Marsh Creek
Good Condition17 years old15,400 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 04-cc-004-r37.70-btwd |
| Carries | State Route 4 |
| Crosses | Marsh Creek |
| Coordinates | 37.89852, -121.71718 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 9 — Foundation above flood level |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 158.5 ft (48.3 m) |
| Max Span | 153.5 ft (46.8 m) |
| Deck Width | 62.7 ft (19.1 m) |
| Deck Area | 922.5 sq m |
| Main Spans | 1 |
| Year Built | 2009 |
Traffic
| Avg Daily Traffic | 15,400 (2017) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28 0393 |