Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound west of Alhambra Ave (Martinez). Left lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on April 7, 2026 at 11:34 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 7, 4:34 PM

Last Updated

6 months, 2 weeks ago

Apr 7, 4:45 PM

Resolved

Apr 7, 11:00 PM

Coordinates

37.9900, -122.1339

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of Alhambra Ave (Martinez). Left lane affected. Expect delays. Apr 7, 4:45 PM

Source: 511_sfbay · ID 511.org/1478142 First seen Apr 7, 2026 4:45 PM