Traffic on the Fort Erie-bound QEW is moving again through Niagara Falls after a crash shut down the highway for about 20 hours.

The highway was shut down between Thorold Stone Road and McLeod Road for so long because the crash sent a woman to hospital with life-threatening injuries and it resulted in significant structural damage to an overpass.

A dump truck’s raised box struck the Lundy’s Lane overpass Wednesday at about 9:50 a.m.

The box came to rest against the overpass and was struck by a trailing minivan. The minivan’s driver was airlifted to a trauma centre for treatment of life-threatening injuries.

Ontario Provincial Police were hoping to reopen the lanes Wednesday afternoon, but repairs to the overpass delayed the reopening until Thursday at 5 a.m.

Police continue to investigate the circumstances of the crash, including the reason the dump truck’s box was raised as it travelled along the highway.

A few hours after the initial crash, an Ornge air ambulance was called back to the area when two tractor-trailers collided on the QEW near Thorold Stone Road. One of the drivers was airlifted to hospital.

Overnight, OPP officers arrested a driver for impaired driving after a vehicle went through the closure barricades at Thorold Stone Road.

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