UPDATE: OPP tweeted at 2:25 p.m. Saturday that Highway 401 has reopened.
OPP say Highway 401 westbound has closed between Colonel Talbot and Union roads.
In a tweet posted at 1:15 p.m. Saturday, police said the road closure is due to a collision.
Emergency crews are on-scene, according to police.
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It’s unclear when Highway 401 is set to reopen.
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