Accident Moderate Severity Stale

CHP : Traffic Hazard on CA-4 Westbound west of Somersville Rd (Antioch). 4th lane from the left blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on November 6, 2026 at 7:27 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Nov 6, 11:27 AM

Last Updated

2 hours, 8 minutes ago

Nov 6, 11:30 AM

Coordinates

38.0035, -121.8355

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of Somersville Rd (Antioch). 4th lane from the left blocked. Expect delays. Nov 6, 11:30 AM

Source: 511_sfbay · ID 511.org/1573958 First seen Nov 6, 2026 11:30 AM