Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Eastbound west of Cummings Skwy (Port Costa). Left lane blocked. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on June 29, 2026 at 10:03 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jun 29, 3:03 PM

Last Updated

3 months, 4 weeks ago

Jun 29, 3:15 PM

Resolved

Jun 29, 9:15 PM

Coordinates

38.0130, -122.1959

Update History

1 observations

CHP : Traffic Collision on CA-4 Eastbound west of Cummings Skwy (Port Costa). Left lane blocked. Expect delays. Jun 29, 3:15 PM

Source: 511_sfbay · ID 511.org/1514843 First seen Jun 29, 2026 3:15 PM