I want to do something about this. I remember a thread (or at least a discussion) back in the depths of winter a year ago.
My approach would be to identify the closest transit routes and stops to various neighborhoods and enclaves by use of steps.
That I know about steps at all was a 2006 need, trying to get to/from Pittsburgh Filmmakers without having to cross Baum Blvd. The Denver Street steps from Gold Way up to Craig were choked with garbage, poison ivy and other overgrowth. I singlehandedly cleaned it out and kept it ivy-free in the five years since.