Accident Moderate Severity Resolved

CHP : Disabled tractor trailer on CA-4 Westbound east of I-680 S (Martinez). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on September 1, 2026 at 6:27 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 1, 11:27 AM

Last Updated

1 month, 3 weeks ago

Sep 1, 11:45 AM

Resolved

Sep 1, 6:00 PM

Coordinates

37.9945, -122.0704

Update History

1 observations

CHP : Disabled tractor trailer on CA-4 Westbound east of I-680 S (Martinez). Lane affected. Expect delays. Sep 1, 11:45 AM

Source: 511_sfbay · ID 511.org/1543716 First seen Sep 1, 2026 11:45 AM