Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Westbound east of Sycamore Ave (Hercules). Left lane blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on April 5, 2026 at 11:41 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 5, 4:41 PM

Last Updated

6 months, 3 weeks ago

Apr 5, 5:00 PM

Resolved

Apr 5, 11:15 PM

Coordinates

38.0092, -122.2239

Update History

3 observations

CHP : Traffic Collision on CA-4 Westbound east of Sycamore Ave (Hercules). Left lane blocked. Expect delays. Apr 5, 4:45 PM

CHP : Traffic Collision on CA-4 Westbound east of Sycamore Ave (Hercules). Left lane blocked. Expect delays. Apr 5, 4:15 PM

CHP : Traffic Collision on CA-4 Westbound east of Sycamore Ave (Hercules). Left lane blocked. Expect delays. Apr 5, 4:00 PM

Source: 511_sfbay · ID 511.org/1477270 First seen Apr 5, 2026 4:00 PM