Apparantly here "they" (the city?) simply destroyed whatever abandoned and decayed housing was nearby the Amtrak overpass.

I've seen these billboards in Richmond too, which state "Donate your car" and "help children in need." That's a little girl on the billboard with an explanation of joyful surprise. Indeed, when parents of children have cars it is quite good for their children as well. But why not just state "Help (millions) of adults in need"? That would cover children, and millions of others whose lives are hampered by a transportation system entirely focused on road transport. Moreover, why advertise to an audience facing a protracted decline in living standards? Though just as ineffective, this billboard would at least be more pointed if positioned at the gates of a mansion with a forty car garage.

Progress marches on, but under capitalism it never cleans up after itself. This is a lithography studio, from the days when that tedious and expensive process was the way to make mass images. Good riddance to such technology! Yet the resources focused on it lie here, in a street in Baltimore, decades after it has become obsolete. Last time I passed by this street on the train two policeman had a teenage black boy forcibly lying on this desolate sidewalk, arms and legs outstreched. They stood over him with guns drawn, presumably questioning him.