Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of Willow Pass Rd (Concord). Right lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on August 7, 2026 at 1:46 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 6, 6:46 PM

Last Updated

2 months, 2 weeks ago

Aug 6, 7:00 PM

Resolved

Aug 7, 1:15 AM

Coordinates

38.0131, -122.0018

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of Willow Pass Rd (Concord). Right lane affected. Expect delays. Aug 6, 7:00 PM

Source: 511_sfbay · ID 511.org/1532058 First seen Aug 6, 2026 7:00 PM