Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Westbound west of Cummings Skwy (Port Costa). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on June 27, 2026 at 4:36 PM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Jun 27, 9:36 AM

Last Updated

4 months ago

Jun 27, 9:45 AM

Resolved

Jun 27, 4:00 PM

Coordinates

38.0141, -122.1943

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound west of Cummings Skwy (Port Costa). Lane affected. Expect delays. Jun 27, 9:45 AM

Source: 511_sfbay · ID 511.org/1514009 First seen Jun 27, 2026 9:45 AM