Woman dead, another injured after Highway 403 crash in Oakville

Provincial police say a woman is dead and another is in hospital after a crash on Highway 403 at Dundas Street East in Oakville.

The crash happened at around 9:30 p.m. on Thursday.

Burlington OPP say they were responding to a call for a stopped vehicle in a live, westbound lane.

“Before emergency response could attend, the vehicle was struck by an approaching tractor-trailer,” says Sgt. Kerry Schmidt in a video posted to social media.

A 78-year-old driver is dead and her 67-year-old female passanger was taken to hospital with non-life-threatening injuries. The SUV they were in broke down in a live lane on the WB #Hwy403/Dundas St and was struck by an approaching tractor trailer. Witnesses are asked to call… pic.twitter.com/oF6byMGsYA

— OPP Highway Safety Division (@OPP_HSD) August 21, 2026

Investigators say a 78-year-old woman died and her 67-year-old female passenger was taken to hospital with non-life-threatening injuries.

The highway was closed for several hours before reopening at around 4 a.m. Friday.

Any witnesses or those with dashcam footage of the crash or broken down vehicle are asked to contact Burlington OPP at 905-681-2511.

READ MORE: Niagara-bound Burlington Skyway faces overnight closures starting Thursday