Accident Resolved

CHP : Residual delays on CA-4 Eastbound between Cummings Skwy (Port Costa) and Center Ave (Martinez). All lanes open. Expect delays.

A accident was reported on CA-4 E near Contra Costa on July 31, 2026 at 3:15 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jul 31, 8:15 AM

Last Updated

19 hours, 22 minutes ago

Jul 31, 8:45 AM

Resolved

Jul 31, 3:00 PM

Coordinates

37.9915, -122.1265

Update History

3 observations

CHP : Residual delays on CA-4 Eastbound between Cummings Skwy (Port Costa) and Center Ave (Martinez). All lanes open. Expect delays. Jul 31, 8:45 AM

CHP : Fire on CA-4 Eastbound between Cummings Skwy (Port Costa) and Center Ave (Martinez). All lanes blocked. Avoid the area. Jul 31, 8:30 AM

CHP : Grass fire on CA-4 Eastbound west of Alhambra Ave (Martinez). Lanes blocked. Expect delays. Jul 31, 8:15 AM

Source: 511_sfbay · ID 511.org/1528985 First seen Jul 31, 2026 8:15 AM