On a 1930's Detroit map, I noticed several diagonal streets which I'm sure no longer exist, such as one named "Sunset" in present-day Oak Park, a planned "Wabash Highway" in Allen Park and one named "Hamilton", also in Allen Park.

This map is what I'm talking about: https://picasaweb.google.com/Hornwre...930sDetroitMap

So what happened to these and other diagonal streets I didn't mention, such as Fordson Highway?