Accident Moderate Severity Resolved

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

A injury accident was reported on CA-4 W near Contra Costa on July 2, 2026 at 1:21 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 2, 6:21 AM

Last Updated

3 months, 3 weeks ago

Jul 2, 7:45 AM

Resolved

Jul 2, 2:00 PM

Coordinates

38.0131, -122.0018

Update History

3 observations

CHP : Traffic Hazard on CA-4 Westbound east of Willow Pass Rd (Concord). Right lane blocked. Expect delays. Jul 2, 7:45 AM

CHP : Traffic Hazard on CA-4 Westbound east of Willow Pass Rd (Concord). Right lane blocked. Expect delays. Jul 2, 7:00 AM

CHP : Traffic Hazard on CA-4 Westbound east of Willow Pass Rd (Concord). Right lane blocked. Expect delays. Jul 2, 6:30 AM

Source: 511_sfbay · ID 511.org/1515994 First seen Jul 2, 2026 6:30 AM