Port Chicago HWY over Mount Diablo Creek
Good Condition47 years old3,240 vehicles/day
Location
| State | California |
| County | Contra Costa |
| Location | 0.6 Mi N HWY 4 |
| Carries | Port Chicago HWY |
| Crosses | Mount Diablo Creek |
| Coordinates | 38.01867, -122.02657 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Slab |
| Total Length | 53.1 ft (16.2 m) |
| Max Span | 49.9 ft (15.2 m) |
| Deck Width | 48.9 ft (14.9 m) |
| Deck Area | 241.4 sq m |
| Main Spans | 1 |
| Year Built | 1979 |
Traffic
| Avg Daily Traffic | 3,240 (2013) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 48 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 28C0195 |