State Route 242 over Holbrook Channel
Good Condition48 years old100,000 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 04-cc-242-r2.65-cnd |
| Carries | State Route 242 |
| Crosses | Holbrook Channel |
| Coordinates | 37.99537, -122.03874 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Slab |
| Total Length | 50.9 ft (15.5 m) |
| Max Span | 49.9 ft (15.2 m) |
| Deck Width | 190.6 ft (58.1 m) |
| Deck Area | 900.5 sq m |
| Main Spans | 1 |
| Year Built | 1978 (reconstructed 2000) |
Traffic
| Avg Daily Traffic | 100,000 (2009) |
| Truck Traffic | 5% |
| Lanes On Bridge | 6 |
Inspection & Ownership
| Last Inspection | 124 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28 0147 |