||Sections of the line constructed in trench are represented with the same line style as the at-grade sections.
The project maps are based on information retrieved from OpenStreetMap and our research. Please contact us if you have more accurate information regarding this project.
* Sources vary on whether it’s $4.4, $4.45, or $4.5 billion, see e.g. the higher figure at https://gothamist.com/news/the-insanely-expensive-second-avenue-subway-explained.