NORTH IDAHO -- Crews had to close parts of Interstate 90 through Lookout Pass for the second time in the last few months. This time it was because of a landslide.

Officials said it could be at least a week before lanes on I-90 are back open. Eastbound I-90 has been split into two lanes.

Crews said Monday that the slide area was still active. They said the area needs to be stable before crews can continue with any work.

We ve been cleaning up as we can. We re seeing some instability for the moment, so we ve pulled our crews back, said Steve Felix of the Montana Department of Transportation.

READ: Landslide closes westbound lanes through Lookout Pass

The Montana Department of Transportation cleared much of the debris that was blocking the westbound lanes on I-90. Crews need to make sure there are not any immediate threats of another slide.

It looks like we re going to have to get some equipment on the slope to do some scaling potentially before we re able to get these lanes totally open, said Felix.

Officials with both the Idaho and Montana Transportation Departments said it has been several years since any part of I-90 was closed because of a landslide. It is even rarer because just 4 weeks ago the area was closed because of high avalanche danger.

Authorities said it is the result of heavy snowpack in the area and an exceptional number of freeze and thaw cycles.

There is no timeframe as to when the westbound lanes of I-90 will reopen.

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