$250 million a mile for an at grade, single mainline rail track? That's nuts. Toronto is just finishing up double tracking 9 miles of track on one of it's commuter rail lines, including basically three new stations with all new platforms, access tunnels, parking lot reconfigurations, etc. for $188 million USD, or about $21 million a mile.
I mean I know NYC is expensive to build in, but holy moly!
https://www.infrastructureontario.ca...ille-Corridor/