Accident Moderate Severity Resolved

CHP : Traffic Collision with Injuries on CA-4 Westbound west of Alhambra Ave (Martinez). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 27, 2026 at 5:02 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 26, 10:02 PM

Last Updated

16 hours, 49 minutes ago

Jul 26, 11:00 PM

Resolved

Jul 27, 5:15 AM

Coordinates

37.9900, -122.1339

Update History

2 observations

CHP : Traffic Collision with Injuries on CA-4 Westbound west of Alhambra Ave (Martinez). Lane affected. Expect delays. Jul 26, 10:15 PM

CHP : Traffic Collision with Injuries on CA-4 Westbound west of Alhambra Ave (Martinez). Lane affected. Expect delays. Jul 26, 10:00 PM

Source: 511_sfbay · ID 511.org/1526686 First seen Jul 26, 2026 10:00 PM