Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound at Hillcrest Ave (Antioch). Off Ramp affected. Expect delays.

A high-severity accident was reported on CA-4 E near Contra Costa on July 20, 2026 at 4:10 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jul 19, 9:10 PM

Last Updated

1 week, 3 days ago

Jul 19, 9:15 PM

Resolved

Jul 20, 3:30 AM

Coordinates

37.9968, -121.7897

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound at Hillcrest Ave (Antioch). Off Ramp affected. Expect delays. Jul 19, 9:15 PM

Source: 511_sfbay · ID 511.org/1523367 First seen Jul 19, 2026 9:15 PM