On our trip out west last fall, we drove I-70 east from Denver to St. Louis. I don't remember anything particularly unusual or difficult about the route. It is pretty flat and boring thru Kansas and there is obviously more traffic near the larger cities. The volume of traffic around and thru Denver was the most dense but we had no problems.
'07 Country Coach Allure 470 Siskiyou Summit #31578, Cummins ISL 425; 2014 Ford F150 toad; Air Force One Toad Brake.
Glen Allen, VA; Smith Mountain Lake, VA.