Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound east of Discovery Bay Blvd (Discovery Bay). Lane affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on May 20, 2026 at 11:29 PM.

Road

CA-4 E

Area

Contra Costa

Address

Loading…

Started

May 20, 4:29 PM

Last Updated

18 hours, 37 minutes ago

May 20, 4:30 PM

Resolved

May 20, 10:45 PM

Coordinates

37.8902, -121.6023

Update History

2 observations

CHP : Traffic Hazard on CA-4 Eastbound east of Discovery Bay Blvd (Discovery Bay). Lane affected. Expect delays. May 20, 4:30 PM

CHP : Traffic Hazard on CA-4 Eastbound east of Discovery Bay Blvd (Discovery Bay). Lane affected. Expect delays. May 20, 4:15 PM

Source: 511_sfbay · ID 511.org/1497352 First seen May 20, 2026 4:15 PM