Update:
Investigators with Montana Highway Patrol say a pilot was flying an experimental aircraft and trying to go over Lookout Pass when he reportedly hit a downdraft and the plane's engine gave out.
Troopers say the pilot aimed for the only thing he could think of which was the highway. He landed hard in the eastbound lanes of Interstate 90.
The aircraft was destroyed, but the pilot suffered only minor injuries. He was taken to an area hospital as a precaution.
One lane of I-90 was closed as of 4 p.m. Tuesday, but was expected to be reopened shortly.
Previous coverage:
Montana Highway Patrol confirms they are responding to a plane down on I-90 about 1/2 mile east of Lookout Pass.
No details yet on how the incident happened, but motorists should expect delays.
This is a developing story.
(story: KHQ.com; photo: MDT Road Report @mdtroadreport)