Accident Moderate Severity Stale

CHP : Traffic Collision on CA-4 Eastbound west of Alhambra Ave (Martinez). Right lane blocked. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on August 24, 2026 at 8:50 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Aug 24, 1:50 PM

Last Updated

4 hours, 5 minutes ago

Aug 24, 2:30 PM

Coordinates

37.9899, -122.1333

Update History

2 observations

CHP : Traffic Collision on CA-4 Eastbound west of Alhambra Ave (Martinez). Right lane blocked. Expect delays. Aug 24, 2:30 PM

CHP : Traffic Collision on CA-4 Eastbound west of Alhambra Ave (Martinez). Right lane affected. Expect delays. Aug 24, 2:00 PM

Source: 511_sfbay · ID 511.org/1540104 First seen Aug 24, 2026 2:00 PM