The westbound lanes of Highway 401 in Oshawa have been closed following a two-vehicle collision that sent at least one person to hospital, according to Ontario Provincial Police.
The crash happened shortly before 4 p.m. Thursday, September 3, 2026, prompting an emergency response and the closure of the westbound highway between Highway 418 and Harmony Road.
Police said at least one person was transported to hospital following the collision. Their condition was not immediately known.
The crash has caused traffic disruptions along the busy Highway 401 corridor, with motorists approaching the closure expected to encounter significant delays as emergency crews remain at the scene.
Investigators are working to determine the circumstances that led to the two-vehicle collision. Authorities have not immediately released information about the identities of those involved, the extent of the damage or whether additional people were injured.
Motorists traveling westbound through Oshawa are advised to exercise caution near the crash area and allow extra time for their journeys while the investigation and cleanup continue.
Further information is expected from police as the investigation progresses and crews work to clear the highway and reopen the affected lanes.
