This is an automatically generated TL;DR, original reduced by 88%.

To put these numbers in global perspective, New York's Second Avenue Subway will cost roughly eight times more than Tokyo's Koto Waterfront line and 36 times more than Madrid's Metrosur tunnels on a per-kilometer, purchasing power parity basis.

The following chart shows only a weak relationship between project cost and metro-area GDP, a rough proxy for wages, especially if we remove the top four projects in New York and Boston.

Figuring out why costs are so high may be crucial not only to bringing those costs down, but to getting a real consensus on infrastructure and a reliable source of funds for the nation's roads, bridges, and transit.

Extended Summary | FAQ | Theory | Feedback | Top five keywords: cost^#1 project^#2 more^#3 rail^#4 state^#5

Duplicates found in /r/Economics, /r/POLITIC and /r/Infrastructurist.