While very scenic, US 212 in eastern Montana has a lot of construction and we recommend avoiding it. There are stretches of construction between the Little Bighorn Battlefield exit off I-90 and Belle Fourche, SD. Towards the eastern part there is a large stretch of oiled gravel that, if wetted down by one of the thunderstorms frequenting the area, will really do a number on your rig.
This route is a popular 'shortcut' that cuts about 50 miles off the interstate route. Ain't worth it at this time. And no, this construction is NOT listed on the DOT website for MT.
Capt. (LDO) USMC (Ret.)
Some people wonder all their lives if they've made a difference. The Marines don't have that problem.” Ronald Reagan