Accident Moderate Severity Stale

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

A injury accident was reported on CA-4 W near Contra Costa on August 27, 2026 at 2:31 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 26, 7:31 PM

Last Updated

1 hour, 3 minutes ago

Aug 26, 7:45 PM

Coordinates

38.0148, -122.2415

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of Sycamore Ave (Hercules). Left lane blocked. Expect delays. Aug 26, 7:45 PM

Source: 511_sfbay · ID 511.org/1541301 First seen Aug 26, 2026 7:45 PM