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Castro Valley Today
By the People, for the People
Woman to serve 6 years for fatal I-580 crash
Raynisha Williams pleaded no contest to drunk driving causing injury in 2023 collision that killed 22-year-old Mario Nunez.
Apr. 1, 2026 at 5:53pm
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Raynisha Williams, 34, of Redwood City has accepted a plea deal and will serve a 6-year prison sentence for a 2023 drunk driving crash on Interstate 580 that resulted in the death of 22-year-old Mario Nunez. Williams pleaded no contest to a charge of drunk driving causing injury, and prosecutors dropped a previous manslaughter charge as part of the plea agreement.
Why it matters
Impaired driving continues to be a major public safety issue, with fatal crashes involving alcohol or drugs remaining stubbornly high despite increased enforcement and awareness campaigns. This case highlights the tragic consequences that can occur when drivers make the choice to get behind the wheel while intoxicated.
The details
According to court records, on August 27, 2023 around 2:30 a.m., Williams' Chevy Trailblazer collided with a Ford utility van on I-580 between Castro Valley and Dublin. Nunez, the driver of the Ford, was killed in the crash. Williams was hospitalized with serious injuries. Police tests showed Williams' blood alcohol level was just below and just above the legal limit for driving.
- The crash occurred on August 27, 2023 around 2:30 a.m.
- Williams pleaded no contest to the charges on March 5, 2026.
- Williams is scheduled to be sentenced on April 3, 2026.
The players
Raynisha Williams
A 34-year-old resident of Redwood City who pleaded no contest to drunk driving causing injury in a 2023 crash that killed 22-year-old Mario Nunez.
Mario Nunez
A 22-year-old who was killed in the August 2023 crash on Interstate 580.
What’s next
After Williams is sentenced on April 3, the court will determine if she is eligible for parole or early release based on her conduct in prison.
The takeaway
This tragic case underscores the devastating impact drunk driving can have on individuals, families, and communities. While increased penalties may deter some, more comprehensive solutions are needed to address the root causes of impaired driving and prevent such senseless loss of life.
