Accident Moderate Severity Resolved

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

A injury accident was reported on CA-4 W near Contra Costa on September 8, 2026 at 4:10 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 8, 9:10 AM

Last Updated

1 month, 2 weeks ago

Sep 8, 9:15 AM

Resolved

Sep 8, 3:15 PM

Coordinates

38.0131, -122.0018

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound entering at Willow Pass Rd (Concord). Lane affected. Expect delays. Sep 8, 9:15 AM

Source: 511_sfbay · ID 511.org/1546329 First seen Sep 8, 2026 9:15 AM