5:15 p.m. update
Highway 17 between Blind River and Sault Ste. Marie has reopened in both directions.
Original story from this morning
Weather conditions have forced the closure of Highway 17 in both directions from Blind River to Sault Ste. Marie.
The Ontario Provincial Police are asking people to stay off the highway as they are dealing with several collisions.
The highway was closed at 11:26 a.m.