BOISE COUNTY, Idaho — The Idaho Transportation Department (ITD) has issued a closure along SH-21 due to major avalanche risk.
Monday’s road closure is for both directions, from Grandjean to Banner Summit (milepost 93.7 to milepost 105.5), and extends to all lanes.
ITD says the highway will remain closed until further notice, and they will reassess conditions at 4pm.
