Accident Moderate Severity Resolved

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

A injury accident was reported on CA-4 W near Contra Costa on August 16, 2026 at 6:01 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 16, 11:01 AM

Last Updated

7 hours, 55 minutes ago

Aug 16, 11:15 AM

Resolved

Aug 16, 5:30 PM

Coordinates

37.9964, -122.1170

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of Center Ave (Martinez). Right lane blocked. Expect delays. Aug 16, 11:15 AM

Source: 511_sfbay · ID 511.org/1536340 First seen Aug 16, 2026 11:15 AM