Laurel Road over Marsh Creek
Fair Condition36 years old4,200 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 488 M. E. Main St./sr-4 |
| Carries | Laurel Road |
| Crosses | Marsh Creek |
| Coordinates | 37.98332, -121.69013 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Box Beam - Multiple |
| Total Length | 85.6 ft (26.1 m) |
| Max Span | 85.6 ft (26.1 m) |
| Deck Width | 36.4 ft (11.1 m) |
| Deck Area | 289.7 sq m |
| Main Spans | 1 |
| Year Built | 1990 |
Traffic
| Avg Daily Traffic | 4,200 (2020) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 123 |
| Inspection Frequency | Every 48 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28C0267 |