Accident Moderate Severity Resolved

CHP : Residual delays on CA-4 Westbound west of Mcewen Rd (Martinez). Right shoulder affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 15, 2026 at 5:16 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 15, 10:16 AM

Last Updated

2 weeks ago

Jul 15, 10:45 AM

Resolved

Jul 15, 5:00 PM

Coordinates

38.0130, -122.1746

Update History

2 observations

CHP : Residual delays on CA-4 Westbound west of Mcewen Rd (Martinez). Right shoulder affected. Expect delays. Jul 15, 10:45 AM

CHP : Traffic Hazard on CA-4 Westbound west of Mcewen Rd (Martinez). Left lanes affected. Expect delays. Jul 15, 10:30 AM

Source: 511_sfbay · ID 511.org/1521422 First seen Jul 15, 2026 10:30 AM