a map of the least travelled roads, in each state (the lowest annual average daily traffic) the red stars are considered the most scenic

the list of the 5 roads with the least amount of traffic is no surprise:

#5. South Dakota. State Route 73 (255 miles, from Lemmon, on the North Dakota state line, to Martin, on the Nebraska state line). AADT: 556.

#4. Nevada. State Route 360 (23 miles, from Dyer to Mina). AADT: 517.

#3. Montana. State Route 19 (21 miles, from Grass Range to Roy). AADT: 489.

#2. North Dakota. State Route 24 (211 miles, from Fort Yates to Solen). AADT: 242.

#1. Alaska. State Route 11 (414 miles, from Fairbanks to Deadhorse). AADT: 196.

https://www.atlasobscura.com/articles/least-traffic-roads-usa