Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Eastbound at Contra Loma Blvd (Antioch). Lane affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on November 1, 2026 at 5:40 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Oct 31, 10:40 PM

Last Updated

6 hours, 43 minutes ago

Oct 31, 10:45 PM

Resolved

Nov 1, 3:45 AM

Coordinates

38.0008, -121.8270

Update History

1 observations

CHP : Traffic Collision on CA-4 Eastbound at Contra Loma Blvd (Antioch). Lane affected. Expect delays. Oct 31, 10:45 PM

Source: 511_sfbay · ID 511.org/1571399 First seen Oct 31, 2026 10:45 PM