This is Michigan’s Quietest Highway
The roadway you're seeing above is claimed to be the most quiet highway in Michigan.
Why exactly is US 45 the quietest road in the state? According to GeoTab.com, a website that compiled a list of the quietest roads in America, it's based on US 45 having a low "annual average daily traffic count" or AADT, a measure of how much use a road gets.
The survey seems somewhat suspect as there are many routes in Michigan that have a lower AADT than US 45, including in the UP, M-149 west of Manistique as well as M-183 on the eastern shore of Big Bay De Noc and M-134 on Drummond Island. Likely the lowest AADT in the state belongs to M-212 in Aloha.
Other quiet roads in America are Alaska's famed Dalton Highway, named the quietest road.