9:35 a.m. Update
The pile-up stage has been privileged though motorists are asked to watch for people in a area investigating.
Traffic was slowed Wednesday morning on Interstate 90 nearby Hardin due to a rollover crash.
The Montana Department of Transportation reported during 8:20 a.m. a pile-up was restraint one line of trade between mile markers 498 and 499, about dual miles easterly of Hardin.
A helicopter was approaching to land during a stage and motorists should be prepared for a brief delay.
The Montana Highway Patrol reports on a website a pile-up in a westbound lanes involves damage and was reported only after 8 a.m.
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