The woman who was crossing Plymouth Road Wednesday when she was hit by a vehicle in a pedestrian crosswalk died during the night, officials said Friday.

Sharita Williams Facebook photo

Sharita Williams, of Clinton Township, died early Friday morning from her injuries sustained in Wednesday afternoon’s crash, Ann Arbor police Lt. Renee Bush said Friday. The 20-year-old woman was a University of Michigan student in the College of Literature, Science and the Arts, according to university records.

Williams worked for the University of Michigan Conference Systems, according to her profile on U-M’s website. She was studying to become a social worker.

U-M spokesman Rick Fitzgerald said Friday grief counselors are being made available to students and staff who knew Williams.

“Conferences services and camps are making counselors available to other student employees and staff,” he said, adding there were a number of students who worked with Williams.

The crash took place just before 2:55 p.m. Wednesday on Plymouth Road between Traverwood Boulevard and Nixon Road. Witnesses said a green Chevrolet Cavalier driving east struck a woman as she crossed Plymouth Road from south to north.

The Cavalier struck Williams in the right lane as it went through the pedestrian crosswalk, witnesses said, and the driver of the vehicle did not appear to see Williams as she crossed the street.

That particular crosswalk has flashing lights that turn on when a pedestrian hits a button on poles on either side of the roadway. The crosswalk lights were flashing when the crash happened, witnesses said.

Williams came to rest in the median between the eastbound and westbound lanes, at least 10 feet away from the crosswalk. She was taken to University of Michigan Hospital and was in critical condition as of Thursday afternoon.

Police are investigating the crash, and the driver of the Cavalier was on scene for hours after the incident Wednesday. No citations or charges have been issued to this point in the investigation.

“It’s still an open investigation,” Bush said. “We still have to interview the driver.”

Police encourage anyone who was a witness to this crash to call the Ann Arbor police anonymous tip line at 734-794-6939.

Kyle Feldscher covers cops and courts for AnnArbor.com. He can be reached at kylefeldscher@annarbor.com or you can follow him on Twitter.