I thought it might be useful to start collecting these in one place.
First off, MT uses 511. Call this phone number each morning and get the most recent info. This will let you check neighboring participating states, too.
Second, those who are planning routes taking you near/through Kalispell MT please note that construction has begun on Hwy 93 approaching downtown from the south, between the intersections of Hwys 93/82 and 93/2. I've been there three times in the last month and the contractor has an exposed gravel and clay base that they are liberally watering to keep down dust. How nice of them. This is expected to go all summer.
This only impacts you if you need to go from downtown to the Somers cutoff and plan on using Hwy 93. It is easily avoided by motorcyclists by utilizing Hwys 2 or 206, and 82. One local route that will not work is "Lower Valley Rd" as it comes to Hwy 93 smack in the middle of the construction zone, so don't let locals refer you to this route. Remember, truck and SUV drivers are not good reference sources for MT road conditions.