Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of I-680 N (Martinez). 3rd lane from the left blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on October 24, 2026 at 7:36 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Oct 24, 12:36 PM

Last Updated

2 days, 16 hours ago

Oct 24, 12:45 PM

Resolved

Oct 24, 6:45 PM

Coordinates

37.9958, -122.0664

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of I-680 N (Martinez). 3rd lane from the left blocked. Expect delays. Oct 24, 12:45 PM

Source: 511_sfbay · ID 511.org/1568113 First seen Oct 24, 2026 12:45 PM