[03-25-2026] Contra Costa County, CA – Motorcyclist Killed After Rear-End Collision on Highway 4 in Brentwood

A motorcyclist died after rear-ending a car and being ejected into traffic on Highway 4 in Brentwood on Wednesday morning, March 25, 2026.

According to the California Highway Patrol, the crash occurred around 12:45 a.m., just past the Sand Creek Road exit. 

After rear-ending the car, the motorcyclist was ejected onto the highway lanes, where he was struck by multiple vehicles.

The motorcyclist was pronounced dead at the scene, while no one else was injured. The identity of the motorcyclist has not been released pending notification of relatives.

The investigation remains ongoing.

What A Lawyer Can Do For You

Many victims put off calling a lawyer even if they sustain injuries after an accident. However, lawyers can help you in many ways. They can provide you with police reports, CCTV footage, and witness statements to strengthen your case. Your attorney will also negotiate with insurance companies to get you fair compensation. The best part is that they will do all of these things for you at no upfront cost. So if you’re injured in an accident, hire a personal injury attorney to recover medical bills, car repair costs, lost wages, and pain and suffering.