Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Eastbound west of CA-242 N (Concord). Lane blocked. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on August 17, 2026 at 6:29 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Aug 16, 11:29 PM

Last Updated

1 day, 4 hours ago

Aug 16, 11:45 PM

Resolved

Aug 17, 5:45 AM

Coordinates

38.0082, -122.0304

Update History

1 observations

CHP : Traffic Collision on CA-4 Eastbound west of CA-242 N (Concord). Lane blocked. Expect delays. Aug 16, 11:45 PM

Source: 511_sfbay · ID 511.org/1536559 First seen Aug 16, 2026 11:45 PM