It's kind of hilarious that that's your takeaway from this. Where I live in Dallas, all of downtown is walled off by elevated and sunken highways with only one

It's kind of hilarious that that's your takeaway from this. Where I live in Dallas, all of downtown is walled off by elevated and sunken highways with only one or two bridges across them, all but guaranteeing adjacent neighborhoods are completely cut off for pedestrians, to prevent them from ever becoming larger communities. There was no reason for this whatsoever except the east, south, and west side neighborhoods were all predominantly black and planners wanted to keep them out. We're still suffering from these decisions today, with all manner of proposal to make the area walkable dead in the water due to the expense that would be entailed by rerouting or rebuilding highways. There is no return on investment anyone got from this that couldn't have been gotten from highways moved another mile or two away into the purely industrial districts where they wouldn't have disrupted anybody.