A woman hit and thrown by a car last week while she was crossing 21st South was upgraded Saturday to serious condition at LDS Hospital, a nursing supervisor said.

Sigrid Petersen, 1904 S. Fourth East, suffered a fractured pelvis and multiple injuries Thursday night when she was struck by a vehicle at 21st South and Fourth East, police said.Peterson was walking north in a crosswalk when struck by a car traveling east, according to police reports. The driver, Carla Martinez, 28, Salt Lake City, was not injured.