For road conditions you can also check 511 (dialing from out-of-area cellphones will still get you to the state you are in); Idaho and Wyoming have this feature, and I believe other western states do as well. Idaho 511 has a website - probably the others do too.
CGs along I-84/86 in OR & ID we have stayed at & liked at least reasonably well:
Mt. View Holiday Trav'l Park in Baker City OR (older CG but facilities are clean, convenient to the interstate but w/o road noise)
Village of Trees RV Resort in Declo (near Burley), Idaho - quite nice, some facilities are newer, good-sized sites; sign in at restaurant attached to gas station just off the interstate
Massacre Rocks SP, near American Falls, ID - sites w/ elec & water, can be windy; clean facilities typical of state parks
CGs along I-90 farther east:
Hardin (MT) KOA - off the road just enough to avoid lots of road noise, friendly CG, clean, nice folks running it, good spot for touring Little Bighorn National Battlefield
Billings (MT) KOA - the flagship, some sites with patios etc., bigger trees - nice & clean, but pricey
Belvidere (SD) KOA - pretty nice, clean, some concrete pads, others gravel
2020 Toyota Tundra CrewMax 5.7L V8 w/ tow pkg, Equal-i-zer
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