Accident Moderate Severity Resolved

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

A injury accident was reported on CA-4 W near Contra Costa on August 10, 2026 at 1:10 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 10, 6:10 AM

Last Updated

22 hours, 49 minutes ago

Aug 10, 6:15 AM

Resolved

Aug 10, 12:15 PM

Coordinates

37.9900, -122.1339

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of Alhambra Ave (Martinez). Left lane blocked. Expect delays. Aug 10, 6:15 AM

Source: 511_sfbay · ID 511.org/1533355 First seen Aug 10, 2026 6:15 AM