Accident Moderate Severity Resolved

CHP : Disabled vehicle on CA-4 Westbound east of I-680 N (Martinez). Right shoulder affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on April 20, 2026 at 12:34 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 19, 5:34 PM

Last Updated

6 months, 1 week ago

Apr 19, 6:00 PM

Resolved

Apr 20, 12:15 AM

Coordinates

37.9958, -122.0664

Update History

2 observations

CHP : Disabled vehicle on CA-4 Westbound east of I-680 N (Martinez). Right shoulder affected. Expect delays. Apr 19, 5:45 PM

CHP : Disabled vehicle on CA-4 Westbound east of I-680 N (Martinez). Right shoulder affected. Expect delays. Apr 19, 5:30 PM

Source: 511_sfbay · ID 511.org/1483445 First seen Apr 19, 2026 5:30 PM