The Fallowfield viaduct is one of many engineering works necessary to get the Red Line as far as central Beechview. Its walkway is also a vital pedestrian link—vital enough that a few years ago, when the walkway was closed for repairs, the Port Authority gave free rides between Westfield and Fallowfield.
In addition to taking us from here to there, the walkway gives us interesting treetop-level views of the hilly back streets of this part of Beechview.