A 23-year-old woman was left with life-threatening injuries after being struck by a vehicle near Billings Bridge in Ottawa early Tuesday morning.

Ottawa police and paramedics responded to Riverside Drive and Bronson Avenue at approximately 4:30 a.m. following reports of a pedestrian collision.

Paramedics treated the woman at the scene before transporting her to hospital in critical condition. A second pedestrian was unharmed, while the adult male driver was assessed at the scene and released from care.

The collision prompted the closure of northbound Riverside Drive between Heron Road and Data Centre Road as investigators examined the scene. The roadway reopened at approximately 10:30 a.m.