Google says 3.5 hours between Sandpoint and Missoula on I-90. Mother Earth says 6 hours. There is a lot of work being done on I-90 so slowing down and dealing with two-way traffic is a regular thing. Also I have a new entry in my worst roads list. I-90 east-bound from the state-line to Superior, MT is a rough-ass ribbon of concrete slabs stitched together by pot-holes. It’s good that they are fixing it, but they are fixing it by pouring new concrete slabs which will be rough just like the old stuff in a few weeks. Stupid concrete! Asphalt is the smooth ride!
If I had that trip to do over I’d take MT 200 up the Clark Fork River to where it meets I-90