LOOKOUT PASS, Mont. - One passing lane of eastbound Interstate 90 and all lanes of westbound I-90 are blocked east of Lookout Pass while crews work to clear a semi-truck crash. 

According to the Idaho State Police, the blockage began around 12:30 p.m. local time. The Montana State Patrol is responding to the crash on the Montana side. 

There is currently no estimated time for reopening.