Accident Moderate Severity Resolved

CHP : Traffic Collision with Injuries on CA-4 Westbound exiting at Alhambra Ave (Martinez). Left lane blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on August 8, 2026 at 2:00 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 7, 7:00 PM

Last Updated

2 months, 3 weeks ago

Aug 7, 8:00 PM

Resolved

Aug 8, 2:00 AM

Coordinates

37.9913, -122.1281

Update History

2 observations

CHP : Traffic Collision with Injuries on CA-4 Westbound exiting at Alhambra Ave (Martinez). Left lane blocked. Expect delays. Aug 7, 7:45 PM

CHP : Traffic Collision with Injuries on CA-4 Westbound exiting at Alhambra Ave (Martinez). Left lane blocked. Expect delays. Aug 7, 7:15 PM

Source: 511_sfbay · ID 511.org/1532623 First seen Aug 7, 2026 7:15 PM