Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Eastbound west of Sycamore Ave (Hercules). 2nd lane from the left blocked. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on October 11, 2026 at 8:23 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Oct 11, 1:23 AM

Last Updated

2 weeks, 2 days ago

Oct 11, 1:30 AM

Resolved

Oct 11, 7:30 AM

Coordinates

38.0105, -122.2302

Update History

3 observations

CHP : Traffic Collision on CA-4 Eastbound west of Sycamore Ave (Hercules). 2nd lane from the left blocked. Expect delays. Oct 11, 1:30 AM

CHP : Traffic Collision on CA-4 Eastbound west of Sycamore Ave (Hercules). 2nd lane from the left blocked. Expect delays. Oct 11, 1:15 AM

CHP : Traffic Collision on CA-4 Eastbound west of Sycamore Ave (Hercules). Right lane affected. Expect delays. Oct 11, 1:00 AM

Source: 511_sfbay · ID 511.org/1562174 First seen Oct 11, 2026 1:00 AM