MP173: MP1.5 may be where the DS obligations split, the physical boundaries for land, maintenance, signal and other functions may be elsewhere. (In METRA’s case, it has got so confusing that they have started to remap and re-survey their R/W and misc. holdings cobbled together from all those other predecessor railroads)
I think that at 16th street the St. Charles Airline comes in from the west. Splits a nice new townhouse/condo developement in two. King Richard Daley doesnt like that. It was one of the things the rails gave up for teh CREATE program. CN would give up the St. Charles line and the city would kick in some $$$.