Michigan is Blue. . . When visiting a friend in a Michigan suburban community (where there are some gravel roads at the request of the affluent home owners) I was surprised to see a number of roads graveled. On our way home, I asked my husband if we could drive into Detroit and was shocked to see many roads in the city were not paved. Interesting.
I'm not aware of any streets in Detoit that aren't paved , you sure you didn't end up driving along some alleys? They're easily recognized because they're usually one lane overgrown with weeds and trees and only go in the direction you are driving...........