Accident Moderate Severity Stale

CHP : Traffic Collision 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 July 28, 2026 at 12:59 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 28, 5:59 AM

Last Updated

1 hour, 14 minutes ago

Jul 28, 6:00 AM

Coordinates

38.0235, -121.9764

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound at Willow Pass Rd (Concord). Lane affected. Expect delays. Jul 28, 6:00 AM

Source: 511_sfbay · ID 511.org/1527252 First seen Jul 28, 2026 6:00 AM