The collision happened at around 8:30 a.m. at the intersection of S. Frederick Avenue and S. Westland Drive in Gaithersburg.
A Potomac Disposal Mack trash collection truck was making a right turn onto S. Frederick Avenue when it struck the cyclist at the crosswalk, according to Montgomery County Police.
The bicyclist suffered life-threatening injuries and was transported to Shady Grove Hospital, where she died.
The victim's is from Gaithersburg, but her identity is not being released pending notification of next of kin.
Police are investigating the accident.
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