Just so RVers who might want to travel the Denali Highway won't get the wrong impression, the first 20 miles of that 134 miles from the Paxson end are paved. That pavement gets you to the Tangle Lakes Campground, which has 45 campsites, tables, firepits, pit toilets, a boat ramp, and a campground host. There is another public cg at Brushkana Creek (MP 105) with similar amenities. At MP 92, the Maclaren River Lodge also has camping.
As well as the dust, the little kettle lakes that abound on both sides of the Susitna River make the Denali Hwy. a mosquito paradise during warm weather. That's why it is most popular with locals during fall, when the mosquito population has dwindled and hiking is possible. The fall colors also make a perfect foreground for spectacular photos of Mt. McKinley/Denali. Or in winter, when the road is popular with Alaskan dog mushers and snowmobilers (snow machinists?).
Just FYI, before 1973 the Denali Highway was the only car route into Mt. McKinley (now Denali) National Park. Most park visitors took the train for that very reason!