Accident High Severity Resolved

CHP : Traffic Collision 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 April 21, 2026 at 3:51 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 21, 8:51 AM

Last Updated

1 month, 2 weeks ago

Apr 21, 9:00 AM

Resolved

Apr 21, 3:00 PM

Coordinates

38.0084, -122.2756

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound east of I-80 W (Hercules). Lane affected. Expect delays. Apr 21, 9:00 AM

Source: 511_sfbay · ID 511.org/1484192 First seen Apr 21, 2026 9:00 AM