Idaho Highway 21 cleanup photo essay Posted on April 9, 2020May 19, 2020 by Jake Melder Check out these photos of the cleanup on Idaho Highway 21 after a 6.5 magnitude earthquake hit the Central Mountains. The crew from Stanley were greeted by this massive avalanche slide on Idaho Highway 21.An aerial survey shortly after the March 31 earthquake showed where slides hit ID-21.An aerial survey shortly after the March 31 earthquake showed where slides hit ID-21.A large boulder fell and dragged across the highway, gouging the pavement.A large boulder fell and dragged across the highway, gouging the pavement.A large boulder fell and dragged across the highway, gouging the pavement.A boulder blew right through this section of guradrail.The force of the landslides treated massive trees like this one as if they were twigs.Some landslide paths are hundreds of feet long, allowing debris to build up significant energy.Smaller rocks littered the highways throughout the canyon.Hazards around every corner. These small rocks were easily pushed off the roadway.Far from the largest boulder that hit the highway. This one is about the size of an ATV.Crews make good headway clearing a path through this avalanche slide.This slide was relatively free of trees or rocks, making cleanup much easier and faster.Rock and dirt from landslides had to be loaded into dump trucks and hauled off. This slide had an estimated 400 cubic yards carried away.A path was punched through, allowing machinery to pass through and work on slides beyond this one.This boulder was buried within one of the larger slides. Travel lanes are twelve feet wide.Another massive boulder blocked an entire lane. This is too large to be hauled off as-is.Operator Dakota Morgan of Stanley drills holes into a boulder to break it apart. Prev 1of24 Next Click this link for details of the re-opening on April 8.