Accident Moderate Severity Resolved

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

A injury accident was reported on CA-4 W near Contra Costa on June 5, 2026 at 2:06 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jun 5, 7:06 AM

Last Updated

4 days, 21 hours ago

Jun 5, 7:30 AM

Resolved

Jun 5, 1:30 PM

Coordinates

37.9924, -122.1251

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of Alhambra Ave (Martinez). Left lane blocked. Expect delays. Jun 5, 7:15 AM

Source: 511_sfbay · ID 511.org/1504036 First seen Jun 5, 2026 7:15 AM