Rancho Cucamonga, CA (August 13, 2025) – A deadly collision involving a motorcycle and a Cadillac shut down a lane of westbound Interstate 10 near Etiwanda Avenue Tuesday morning, according to the California Highway Patrol (CHP).
The fatal crash occurred at approximately 6:57 a.m. on August 12 in San Bernardino County. CHP officers and emergency medical personnel responded to the scene, where they confirmed the motorcyclist had died from injuries sustained in the collision. The identity of the victim has not yet been released pending notification of family.
One westbound lane of I-10 was closed for several hours while investigators documented the scene and crews worked to clear the wreckage. The Cadillac remained at the scene, and CHP has not yet released information about the condition of its driver.
The cause of the collision remains under investigation, with authorities reviewing speed, lane position, and potential contributing factors.
We extend our deepest condolences to the loved ones of the person who lost their life in this tragic crash.
Motorcycle Fatalities on Southern California Freeways
Motorcycle crashes on high-speed interstates such as I-10 often result in fatal outcomes due to the rider’s exposure and lack of protective structure. Even when wearing proper safety gear, motorcyclists face extreme risks in collisions with larger passenger vehicles like sedans or SUVs.
The I-10 corridor through Rancho Cucamonga is a heavily traveled commuter route with dense traffic during morning hours. Lane changes, merging traffic, and speed differentials can create dangerous situations for riders and drivers alike.
Fatal crashes like this one not only bring heartbreak to families but can also lead to extensive investigations to determine liability. Survivors often seek justice and compensation for their loss through both criminal and civil proceedings.
If your family has lost a loved one in a motorcycle collision, it’s important to seek both emotional and legal support to navigate the weeks and months ahead.
The loss of a loved one in a preventable crash is a devastating experience. Local Accident Reports is here to connect grieving families with compassionate legal advocates and community resources to help them find answers and accountability. Contact us today to learn how we can help you during this difficult time.
