Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound entering at Willow Pass Rd (Pittsburg). On Ramp affected. Expect delays.

A high-severity accident was reported on CA-4 E near Contra Costa on September 18, 2026 at 8:40 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Sep 18, 1:40 PM

Last Updated

1 month, 1 week ago

Sep 18, 1:45 PM

Resolved

Sep 18, 7:45 PM

Coordinates

38.0218, -121.9608

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound entering at Willow Pass Rd (Pittsburg). On Ramp affected. Expect delays. Sep 18, 1:45 PM

Source: 511_sfbay · ID 511.org/1551417 First seen Sep 18, 2026 1:45 PM