An 84-year-old woman has died after she was struck while walking in Ottawa's south end.

Paramedics say the woman suffered multi-system trauma when she was struck on Walkley Road between Heatherington and Heron roads.

The crash happened at about 6:45 p.m. Tuesday, police say, forcing the closure of Walkley's eastbound lanes for several hours.

The pedestrian, 84, was transported to hospital in serious condition where she later died from her injuries.

Police continue to investigate.