A 70-year-old Washington woman is dead after crashing her motorcycle west of Gillette, the Wyoming Highway Patrol says.

The crash happened around 6:30 p.m. on Friday, Aug. 5, near milepost 93.728 on Interstate 90.

The patrol says Marilou Vanderiet was riding east in the right-hand lane when she failed to negotiate a left-hand curve, struck a guardrail, and was thrown from her bike.

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Vanderiet, who was not wearing a helmet, was taken to Campbell County Memorial Hospital and died from her injuries.

The patrol says driver inattention is being investigated as a possible contributing factor.

So far this year, there have been nine motorcycle fatalities in Wyoming, three of which have occurred this month.

LOOK: Pictures From the 2021 Sturgis Motorcycle Rally in South Dakota

Ain't nothing stopping the 81st edition of the largest biker rally on earth, the Sturgis Motorcycle Rally, which wraps up this weekend (August 15, 2021). It was another August of motorcycles, music, and fun in the tiny Black Hills town of Sturgis, South Dakota. 


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