Accident High Severity Stale

CHP : Traffic Hazard on CA-4 Westbound east of I-80 W (Hercules). Lane affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on August 16, 2026 at 11:13 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 16, 4:13 PM

Last Updated

2 hours ago

Aug 16, 4:30 PM

Coordinates

38.0156, -122.2709

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of I-80 W (Hercules). Lane affected. Expect delays. Aug 16, 4:30 PM

Source: 511_sfbay · ID 511.org/1536432 First seen Aug 16, 2026 4:30 PM