Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound west of L St (Antioch). 2nd lane from the left affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on September 6, 2026 at 10:32 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 6, 3:32 PM

Last Updated

1 month, 2 weeks ago

Sep 6, 3:45 PM

Resolved

Sep 6, 9:45 PM

Coordinates

38.0009, -121.8262

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of L St (Antioch). 2nd lane from the left affected. Expect delays. Sep 6, 3:45 PM

Source: 511_sfbay · ID 511.org/1545900 First seen Sep 6, 2026 3:45 PM