Accident High Severity Resolved

CHP : Traffic Collision on CA-4 Eastbound ramp to CA-242 N (Concord). Right and left lanes affected. Expect delays.

A high-severity accident was reported on CA-4 E near Contra Costa on April 8, 2026 at 1:10 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Apr 7, 6:10 PM

Last Updated

2 months ago

Apr 7, 6:30 PM

Resolved

Apr 8, 12:30 AM

Coordinates

38.0082, -122.0304

Update History

2 observations

CHP : Traffic Collision on CA-4 Eastbound ramp to CA-242 N (Concord). Right and left lanes affected. Expect delays. Apr 7, 6:30 PM

CHP : Traffic Collision on CA-4 Eastbound at CA-242 N (Concord). Left lane affected. Expect delays. Apr 7, 6:15 PM

Source: 511_sfbay · ID 511.org/1478190 First seen Apr 7, 2026 6:15 PM