Ryan G-S @ryangs.net · Apr 24 My god, how did the cost of 1.5 miles of AT-GRADE RAIL go from $9.25 to $49 million?! 1 likes 1 replies ? Reply Replies Star:Line Chicago · Apr 24 Given the steep decrease of aerial structure costs I am very much hoping that what's happening is some of the elevated portions getting value-engineered down to at-grade or cut/fill