Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Westbound at L St (Antioch). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on May 25, 2026 at 1:14 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

May 24, 6:14 PM

Last Updated

1 day, 13 hours ago

May 24, 6:15 PM

Resolved

May 25, 12:30 AM

Coordinates

38.0014, -121.8279

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound at L St (Antioch). Lane affected. Expect delays. May 24, 6:15 PM

Source: 511_sfbay · ID 511.org/1499033 First seen May 24, 2026 6:15 PM