Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Westbound west of Railroad Ave (Pittsburg). Left lanes blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on April 21, 2026 at 1:21 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 21, 6:21 AM

Last Updated

6 months, 1 week ago

Apr 21, 6:45 AM

Resolved

Apr 21, 1:00 PM

Coordinates

38.0186, -121.8951

Update History

3 observations

CHP : Traffic Collision on CA-4 Westbound west of Railroad Ave (Pittsburg). Left lanes blocked. Expect delays. Apr 21, 6:45 AM

CHP : Traffic Collision on CA-4 Westbound west of Railroad Ave (Pittsburg). Left lane affected. Expect delays. Apr 21, 6:30 AM

CHP : Traffic Collision on CA-4 Westbound west of Railroad Ave (Pittsburg). Lane blocked. Expect delays. Apr 21, 6:15 AM

Source: 511_sfbay · ID 511.org/1484110 First seen Apr 21, 2026 6:15 AM