Accident Resolved

CHP : Severe traffic alert on CA-4 Eastbound east of Contra Loma Blvd (Antioch). Lanes open. Expect delays.

A accident was reported on CA-4 E near Contra Costa on October 4, 2026 at 1:22 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Oct 4, 6:22 AM

Last Updated

3 weeks, 2 days ago

Oct 4, 6:45 AM

Resolved

Oct 4, 1:00 PM

Coordinates

38.0002, -121.8248

Update History

4 observations

CHP : Severe traffic alert on CA-4 Eastbound east of Contra Loma Blvd (Antioch). Lanes open. Expect delays. Oct 4, 6:30 AM

CHP : Severe traffic alert on CA-4 Eastbound east of Contra Loma Blvd (Antioch). Lanes open. Expect delays. Oct 4, 5:45 AM

CHP : Severe traffic alert on CA-4 Eastbound east of Contra Loma Blvd (Antioch). Off Ramp affected. Expect delays. Oct 4, 4:00 AM

CHP : Severe traffic alert on CA-4 Eastbound east of Contra Loma Blvd (Antioch). Off Ramp affected. Expect delays. Oct 4, 3:15 AM

Source: 511_sfbay · ID 511.org/1558783 First seen Oct 4, 2026 3:15 AM