Worth a read: http://www.businessinsider.com/secon...ucture-2016-12

2nd Ave subway: It's pretty and shiny, and it's also the world's most expensive subway ever built on a per-mile basis: $4.45 billion for two miles.

East Side access: When this project is finished in 2022 (or later, if it gets delayed again) it is expected to have cost over $10 billion while serving fewer riders than the new Second Avenue line.

PATH WTC station: It cost $4 billion, making it the world's most expensive train station.

Temporary PATH WTC station: The new station replaced a temporary PATH terminal that opened in 2003, just 26 months after the previous PATH terminal was destroyed in the attacks, at a cost of just $323 million. That station had the same capacity as the new one that cost more than 10 times as much.

Port Authority Bus Terminal: They want to spend $10 billion on a bus station.

Penn Station...?