This document provides an overview of key infrastructure projects underway or recently completed in New York City, including the Second Avenue Subway expansion, East Side Access connecting the Long Island Rail Road to Grand Central Terminal, the #7 subway line extension, and the ongoing construction of new Water Tunnel #3 to replace the city's aging water tunnels #1 and #2. It details the scale, costs, and timelines of these massive underground infrastructure projects that underpin transportation and water delivery networks in New York City.

1. NYC Infrastructure Overview
Professor Patricia Lancaster, FAIA
Masters of Science in Real Estate Development
Infrastructure and Urban Development

2. What lies beneath New York City?
• NYC Underground
– First 30ft, water
mains, power
mains, telecom
cables
– Next 200ft, subway
tunnels and sewer
lines
– 800ft or 70 stories
down, water
tunnels
Water mains
subway
sewers
subway stations
steam
gas mains
cable/telecom
electricity
deep water tunnel

3. Second Avenue Subway
• First major expansion in over 50
years
• Two track line along 2nd Ave from
125th Street to the Financial Center
• Includes connection from 2nd Ave
through the 63rd Street tunnel to
existing service connections
• 16 ADA accessible stations with
escalators, stairs and elevators
• $4.45 Billion
• Four phases

5. East Side Access
• Largest transportation
project in USA
• Brings LIRR into GCT
• $8.3 billion
• Started in 2006;
completes in 2019
• 160,000 passengers/day
• 330,000 sf concourse
• (2) 200,000 sf caverns
housing eight tracks -
160’ below grade

6. #7 Line Subway Extension
• $2.1 million - City
financed by Tax
Increment Financing
from West Side Yards
• Station and two
tunnels
• 1-1/2 miles west of
Times Square
• Complete June 2014

7. City Water Tunnels
Two large water tunnels—both
in serious need of repair--
distribute water
• City Tunnel No. 1
– First put into service in 1917
– Carries 500-600 million gallons a
day
• City Tunnel No. 2
– Completed in 1936
– Carries 700-800 million gallons a
day
• City Tunnel No. 3
– Stage 1 is already in service
– The Manhattan portion of Stage 2
will be in service in 2013
– When completed in 2020, it will
allow DEP to shut down and
repair No. 1 and No. 2 for the first
time in history

8. Water Tunnel #3
• Tunnel #1 - 1917
• Tunnel #2 - 1936
• Tunnel #3 - started in
1969 and is due to be
completed in 2020
• 60 miles long
• $6 billion
• As much as 800’
below grade
• MN diameter 24’