Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound west of I-680 N (Martinez). Right lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 26, 2026 at 5:35 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 26, 10:35 AM

Last Updated

1 day, 7 hours ago

Jul 26, 11:00 AM

Resolved

Jul 26, 5:00 PM

Coordinates

37.9948, -122.0695

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of I-680 N (Martinez). Right lane affected. Expect delays. Jul 26, 10:45 AM

Source: 511_sfbay · ID 511.org/1526499 First seen Jul 26, 2026 10:45 AM