It happened at the Prince of Wales Drive and Victoria Avenue intersection sometime before 10:45 a.m. on May 31.
The pedestrian was crossing Victoria Avenue from the south side of the road, heading to the north side when she was hit, police say.
EMS and other emergency responders also attended the scene. The woman was taken to hospital.
Drivers were being told by police to avoid the area. The intersection was closed off to traffic, but reopened at about 2:30 p.m. that day.
Police are still investigating and are asking anyone with information to call its department at 306-777-6500 or Crime Stoppers at 1-800-222-8477.