By Crash News Writer 
Alameda County, CA (September 28, 2026) – A 17-year-old girl identified as Trezur Williams died Friday afternoon in a collision involving a Honda Civic and a tractor-trailer on Mountain House Road.
According to the California Highway Patrol, the September 25 crash occurred at approximately 12:04 p.m. near West Grant Line Road. Williams was a passenger in a 2004 Honda Civic traveling north on Mountain House Road.
Authorities reported that the Civic collided broadside with a southbound 2014 Freightliner Cascadia tractor hauling two end-dump trailers. Williams was ejected from the Honda and suffered fatal injuries. Paramedics pronounced her dead at the scene.
Both drivers remained at the scene following the collision. Initial reports did not indicate whether either driver was injured.
The crash forced authorities to close both directions of Mountain House Road while investigators processed the scene. The California Highway Patrol continues to investigate what led to the collision.
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Losing a family member in a collision involving a commercial truck can leave loved ones with difficult questions about what happened and what steps they can take next. Understanding car accident laws in California can help families learn about insurance claims, wrongful death cases, and their potential legal rights.
Evidence can be especially important after a fatal truck crash. Investigators may examine vehicle damage, roadway evidence, witness statements, photographs, electronic vehicle data, and the car accident report. When a commercial vehicle is involved, additional records related to the truck and its operation may also become relevant.
Someone searching for a car accident near me or car accident near Alameda County may find general information about claims after a fatal collision. However, accidents involving tractor-trailers can raise issues that differ from crashes involving only passenger vehicles.
Families should consider preserving insurance correspondence, funeral expenses, investigative documents, and a copy of the car accident report. A search for a car accident near me or car accident near Alameda County can provide general guidance, but an attorney can review the evidence and explain what legal options may be available.
PLEASE TAKE NOTICE
This article is based on information released by authorities and may be updated as the investigation continues. Readers looking for information about their rights following a serious or fatal collision can review frequently asked questions in California.
The Alameda County Sheriff’s Office Coroner’s Bureau identified the deceased passenger as Trezur Williams, 17. Authorities had not announced a final determination regarding what caused the collision.
Families affected by fatal roadway crashes can find additional information through accident resources in California. Further information about the investigation or related traffic restrictions should be confirmed through local authorities.
The content of this news story is for informational purposes only and should not be considered legal or medical advice. All information is based on public reports available at the time of publication, and details may change as investigators release additional findings. Readers should seek legal counsel if they or someone they know has been involved in a similar incident. The publisher assumes no liability for actions taken or not taken based on the information provided in this article. Learn more with our disclaimer.
If your family has been affected by a fatal truck collision, consider speaking with a California personal injury lawyer as soon as possible about your rights and potential legal options.