[zip1234]

There really is no reason to have this freeway there. It makes the area worse and goes nowhere.

[sangnoir]

This being the United states, I'll go ahead and assume it was designed to go through (or isolate) a black neighborhood.

[t-3]

Not really applicable, as Detroit is one of the blackest cities in the U.S., with ~80% black population. It's a high-speed corridor from the northern and northwestern suburbs to downtown. The east, west, and south also have freeways heading downtown.