Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound at Willow Pass Rd (Concord). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on May 30, 2026 at 8:30 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

May 30, 1:30 PM

Last Updated

4 months, 3 weeks ago

May 30, 1:45 PM

Resolved

May 30, 8:00 PM

Coordinates

38.0131, -122.0018

Update History

2 observations

CHP : Traffic Hazard on CA-4 Westbound at Willow Pass Rd (Concord). Lane affected. Expect delays. May 30, 1:45 PM

CHP : Traffic Hazard on CA-4 Westbound at Willow Pass Rd (Concord). Lane affected. Expect delays. May 30, 1:30 PM

Source: 511_sfbay · ID 511.org/1501483 First seen May 30, 2026 1:30 PM