The Montana Department of Transportation has closed both north and southbound lanes of Interstate-15 south of Helena following a crash two miles south of Montana City.
A semi crash and ensuing fire have blocked the northbound lanes.
Traffic is being detoured around the wreck along the frontage road at Exit 182 northbound and 187 southbound, according to the MDT travel page.
There was another incident early this morning further north on Highway 279, nine miles south of the junction with 200. A semi spun out and is blocking the northbound lane.
The MDT says to expect delays and single-lane traffic in that area.