The track that runs north-south on the east side of Bangor is old Lackawanna, and i believe L&NE before that.
Today its NS...its the "back road" to the poconos and scranton via the DL, which operates the old DL&W from slateford jct to Scranton.
Maybe about 10 years ago, it was pretty active as a thru route from the NS system to Scranton. There were also coal trains to the Portland powerplanr, before it stopped using coal.
Today thru traffic comes into scranton one of the other three thru routes into town.....so idk if there are anymore regular trains thru Bangor. If there are any local industries getting carloads, it would be via a local from Allentown, probably 1 day a week, or as needed.
The L&NE used to come into Bangor from Pen Argyl...but i think those tracks are gone. The NS may still operate to Penn Argyl...IDK...
I tried to find an accurate PennDOT rr map on the web, but no luck. There might be one on Railroad.net here.