Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound west of Walnut Blvd (Brentwood). Lane affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on June 21, 2026 at 6:14 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jun 20, 11:14 PM

Last Updated

4 months ago

Jun 20, 11:15 PM

Resolved

Jun 21, 5:15 AM

Coordinates

37.8965, -121.6781

Update History

3 observations

CHP : Traffic Hazard on CA-4 Eastbound west of Walnut Blvd (Brentwood). Lane affected. Expect delays. Jun 20, 11:15 PM

CHP : Traffic Hazard on CA-4 Eastbound west of Walnut Blvd (Brentwood). Lane affected. Expect delays. Jun 20, 11:00 PM

CHP : Traffic Hazard on CA-4 Eastbound west of Walnut Blvd (Brentwood). Lane affected. Expect delays. Jun 20, 10:45 PM

Source: 511_sfbay · ID 511.org/1511141 First seen Jun 20, 2026 10:45 PM