CHP - Contra Costa

BRENTWOOD, CA - On March 25, 2026, at approximately 12:47 am, officers assigned to the California Highway Patrol, Contra Costa Area office responded to a multiple vehicle crash which occurred on State Route 4 westbound west of Sand Creek Road, in the city of Brentwood. 

The preliminary investigation indicated a motorcycle was traveling on State Route 4 westbound west of Sand Creek Road, and for reasons still under investigation, rear ended another vehicle. After this first impact, the male rider was ejected from the motorcycle and landed in the lanes of traffic. Tragically, the rider was struck by other vehicles and pronounced deceased on scene.

The other drivers were uninjured, remained on scene and cooperated with law enforcement during the investigation. Officers are still trying to determine if DUI was a factor.

If anyone witnessed the incident or the events leading up to it, please contact the Contra Costa Area office in Martinez at (925) 387- 1900 or email your contact information to mailto:[email protected] to be contacted by the investigating officer. 

The mission of the California Highway Patrol is to provide the highest level of safety, service, and security.

As graduation approaches, 129 Cadets preparing to become California Highway Patrol Officers line up for their uniform inspection—one of the final milestones in their Academy journey.

This inspection reflects months of intensive training, discipline, and commitment. Each cadet stands ready to take the oath and begin a career dedicated to protecting and serving the people of California.

**SR-24 TRAFFIC ADVISORY**

***UPDATE 6:15 PM - All lanes have been cleared***

SR-24 WB at SR-13: All lanes closed due to crash involving a big rig. All traffic is being diverted to SR-13. Unknown ETO