Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of I-680 N (Martinez). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 10, 2026 at 2:24 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 10, 7:24 AM

Last Updated

2 weeks, 6 days ago

Jul 10, 7:30 AM

Resolved

Jul 10, 1:30 PM

Coordinates

37.9958, -122.0664

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of I-680 N (Martinez). Lane affected. Expect delays. Jul 10, 7:30 AM

Source: 511_sfbay · ID 511.org/1519170 First seen Jul 10, 2026 7:30 AM