Accident Moderate Severity Resolved

CHP : Disabled vehicle on CA-4 Westbound entering at Willow Pass Rd (Concord). Lane blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on September 29, 2026 at 6:23 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 29, 11:23 AM

Last Updated

3 weeks, 6 days ago

Sep 29, 12:30 PM

Resolved

Sep 29, 6:30 PM

Coordinates

38.0174, -121.9904

Update History

4 observations

CHP : Disabled vehicle on CA-4 Westbound entering at Willow Pass Rd (Concord). Lane blocked. Expect delays. Sep 29, 12:30 PM

CHP : Disabled vehicle on CA-4 Westbound entering at Willow Pass Rd (Concord). Lane blocked. Expect delays. Sep 29, 12:15 PM

CHP : Traffic Hazard on CA-4 Westbound exiting at Willow Pass Rd (Concord). Lane blocked. Expect delays. Sep 29, 12:00 PM

CHP : Traffic Hazard on CA-4 Westbound exiting at Willow Pass Rd (Concord). Lane blocked. Expect delays. Sep 29, 11:45 AM

Source: 511_sfbay · ID 511.org/1556454 First seen Sep 29, 2026 11:45 AM