Accident Moderate Severity Resolved

CHP : Traffic Collision with Injuries on CA-4 Westbound east of Willow Pass Rd (Concord). Lane closed. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on September 7, 2026 at 12:00 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 7, 5:00 AM

Last Updated

1 month, 3 weeks ago

Sep 7, 5:30 AM

Resolved

Sep 7, 11:45 AM

Coordinates

38.0142, -121.9970

Update History

2 observations

CHP : Traffic Collision with Injuries on CA-4 Westbound east of Willow Pass Rd (Concord). Lane closed. Expect delays. Sep 7, 5:15 AM

CHP : Traffic Collision with Injuries on CA-4 Westbound east of Willow Pass Rd (Concord). Lane affected. Expect delays. Sep 7, 4:45 AM

Source: 511_sfbay · ID 511.org/1546017 First seen Sep 7, 2026 4:45 AM