BOISE, Idaho — State Highway 21 is closed in both directions from Grandjean to Banner Summit due to a landslide, the Idaho Transportation Department (ITD) announced Tuesday.
ITD said the landslide was reported at 5:17 p.m. Tuesday, Aug. 26. The closure affects all lanes between milepost 93.7 and milepost 105.5, Grandjean to Banner Summit.
Officials said Highway 21 could potentially be closed for the next two days north of Grandjean Junction due to the slide and debris on the road…