A no-injury collision involving two vehicles was reported Thursday evening on eastbound State Route 4 near the Port Chicago Highway offramp in Contra Costa County, California. The incident was reported at approximately 5:18 p.m. on Oct. 1, 2026.
The vehicles were located on the right-hand shoulder, according to a California Highway Patrol dispatch update issued at 5:24 p.m. The available dispatch information did not indicate that either vehicle remained in an active travel lane.
CHP classified the incident as a traffic collision with no reported injuries. The dispatch did not provide further details about the vehicles or the circumstances leading to the crash.
The collision location was identified as eastbound State Route 4 near the Port Chicago Highway off-ramp. No additional roadway closures, emergency medical response or towing activity was noted in the available CHP information.
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