Accident Resolved

CHP : Residual delays on CA-4 Westbound east of San Joaquin County Line (Byron). All lanes open. Expect delays.

A accident was reported on CA-4 W near Contra Costa on September 24, 2026 at 2:57 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 24, 7:57 AM

Last Updated

1 month ago

Sep 24, 8:00 AM

Resolved

Sep 24, 2:15 PM

Coordinates

37.8903, -121.5694

Update History

1 observations

CHP : Residual delays on CA-4 Westbound east of San Joaquin County Line (Byron). All lanes open. Expect delays. Sep 24, 8:00 AM

Source: 511_sfbay · ID 511.org/1554035 First seen Sep 24, 2026 8:00 AM