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Woman killed in vehicle collision with boulder on I-280 median in San Mateo Co.

3 verified updates • corroborated by 2 independent sources • tracked since September 20, 2026

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  Sep 20, 11:00 PM 1 source: SFGATE

  Woman killed in vehicle collision with boulder on I-280 median in San Mateo Co.
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  Sep 21, 12:00 AM 1 source: sfgate.com
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  Sep 21, 12:30 AM 1 source: SFGATE