Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound entering at Willow Pass Rd (Concord). On Ramp blocked. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on June 10, 2026 at 11:17 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jun 10, 4:17 PM

Last Updated

1 month, 2 weeks ago

Jun 10, 4:30 PM

Resolved

Jun 11, 12:00 AM

Coordinates

38.0131, -122.0018

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound entering at Willow Pass Rd (Concord). On Ramp blocked. Expect delays. Jun 10, 4:30 PM

Source: 511_sfbay · ID 511.org/1506466 First seen Jun 10, 2026 4:30 PM