Delta Road over Rock Slough
Good Condition25 years old532 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 3 Mi E Knightsen |
| Carries | Delta Road |
| Crosses | Rock Slough |
| Coordinates | 37.97652, -121.62001 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 9 (Excellent) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 177.2 ft (54 m) |
| Max Span | 59.1 ft (18 m) |
| Deck Width | 29.2 ft (8.9 m) |
| Deck Area | 480.6 sq m |
| Main Spans | 3 |
| Year Built | 2001 |
Traffic
| Avg Daily Traffic | 532 (2013) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28C0082 |