Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of Willow Pass Rd (Concord). 3rd lane from the left affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on November 1, 2026 at 8:07 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Nov 1, 12:07 PM

Last Updated

14 hours ago

Nov 1, 1:15 PM

Resolved

Nov 1, 7:15 PM

Coordinates

38.0174, -121.9904

Update History

2 observations

CHP : Traffic Hazard on CA-4 Westbound east of Willow Pass Rd (Concord). 3rd lane from the left affected. Expect delays. Nov 1, 12:15 PM

CHP : Disabled vehicle on CA-4 Westbound east of Willow Pass Rd (Concord). Lane blocked. Expect delays. Nov 1, 12:00 PM

Source: 511_sfbay · ID 511.org/1571539 First seen Nov 1, 2026 12:00 PM