Fatal Crash on I-580 near San Quentin Off-Ramp in Marin County

Marin County, CA – In the early hours of Sunday, June 21, 2026, a single-vehicle collision resulted in a fatality on eastbound Interstate 580 near the San Quentin off-ramp, according to CHP Fatal.

The California Highway Patrol reports that the accident took place around 1:43 AM on eastbound Interstate 580 near the San Quentin off-ramp.

Authorities said the vehicle, a gray Nissan Versa carrying three occupants, came to rest on the right shoulder with major front-end and technical damage. Emergency medical services were dispatched to the scene. A tow was requested for the Nissan Versa following the conclusion of on-scene proceedings.

No additional details regarding the identities of those involved or the full circumstances of the collision had been released at the time of reporting. The investigation remains ongoing.

Single-Vehicle Collisions

In some cases, investigations may reveal that even in a single-vehicle accident, nearby drivers or unsafe road features share some responsibility. California’s comparative negligence rule means that, even if those injured in accidents are found partially at fault, they may still be eligible to receive partial compensation for damages through a wrongful death claim.

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