Concord Avenue over Marsh Creek
Good Condition67 years old3,979 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 1.0 Mi W Walnut AVE |
| Carries | Concord Avenue |
| Crosses | Marsh Creek |
| Coordinates | 37.90368, -121.71635 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 21.7 ft (6.6 m) |
| Max Span | 21.7 ft (6.6 m) |
| Deck Width | 30.5 ft (9.3 m) |
| Deck Area | 61.4 sq m |
| Main Spans | 1 |
| Year Built | 1959 |
Traffic
| Avg Daily Traffic | 3,979 (2013) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28C0398 |