Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound ramp to I-80 E (Hercules). Right lane affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on September 12, 2026 at 8:38 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 12, 1:38 PM

Last Updated

1 month, 2 weeks ago

Sep 12, 1:45 PM

Resolved

Sep 12, 8:00 PM

Coordinates

38.0162, -122.2677

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound ramp to I-80 E (Hercules). Right lane affected. Expect delays. Sep 12, 1:45 PM

Source: 511_sfbay · ID 511.org/1548520 First seen Sep 12, 2026 1:45 PM