According to the Highway Department, on US-212 at mile marker post #45 at the Beartooth Lake, just 27 miles South-West of the Montana, Wyoming border, as of August 31th 2021, and effective until September 24, 2021 and Monday through Thursday weekly between the night hours of 07:00 pm till 07:00 am,.
Basically, over night, the US-212 will be closed at Beartooth Lake on the Wyoming side, starting at mile marker #18 to mile marker #19 due to construction activity until further notice.