Multiple closures on Highway 401 across Durham region

September 3, 2025

The Ontario Provincial Police says there are multiple closures on Highway 401 due to multiple collisions on Wednesday afternoon.

Highway 401 is also closed Eastbound at 401 East of Highway 412 near Whitby.

Police say they are also conducting an investigation on Highway 401 Eastbound at Salem Road near Ajax, where all lanes are closed.

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Police are asking drivers to avoid these areas as rush hour continues.