Building The Second Avenue Subway

This photo shows an arch form used for tunnel concrete operations on the east tunnel of the Second Avenue Subway. (credit: Metropolitan Transportation Authority)
Second Avenue Subway Construction This photo shows an arch form used for tunnel concrete operations on the east tunnel of the Second Avenue Subway. (credit: Metropolitan Transportation Authority)
Waterproofing of the east tunnel of the Second Avenue Subway. (credit: Metropolitan Transportation Authority)
Second Avenue Subway Construction Waterproofing of the east tunnel of the Second Avenue Subway. (credit: Metropolitan Transportation Authority)
Building an entrance to the Second Avenue Subway's 72nd Street Station. (credit: Metropolitan Transportation Authority)
Second Avenue Subway Construction Building an entrance to the Second Avenue Subway's 72nd Street Station. (credit: Metropolitan Transportation Authority)
Mining the cavern that will house the Second Avenue Subway's 72nd Street Station. (credit: Metropolitan Transportation Authority)
Second Avenue Subway Construction Mining the cavern that will house the Second Avenue Subway's 72nd Street Station. (credit: Metropolitan Transportation Authority)
(credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
A Metropolitan Transportation Authority (MTA) worker walks in an underground tunnel for the long-proposed 2nd Avenue subway line on April 12, 2007.
(credit: Spencer Platt/Getty Images)
(credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
A Metropolitan Transportation Authority (MTA) worker walks in an underground tunnel for the long-proposed 2nd Avenue subway line on April 12, 2007.
(credit: Spencer Platt/Getty Images)
A Metropolitan Transportation Authority (MTA) worker walks in an underground tunnel for the long-proposed 2nd Avenue subway line on April 12, 2007.  (credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction A Metropolitan Transportation Authority (MTA) worker walks in an underground tunnel for the long-proposed 2nd Avenue subway line on April 12, 2007. (credit: Spencer Platt/Getty Images)
(credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
Metropolitan Transportation Authority (MTA) workers look at proposed designs for a completed subway platform in an underground tunnel for the long-proposed 2nd Avenue subway line on April 12, 2007.
(credit: Spencer Platt/Getty Images)
(credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
A Metropolitan Transportation Authority (MTA) worker walks in an underground tunnel for the long-proposed 2nd Avenue subway line on April 12, 2007.
(credit: Spencer Platt/Getty Images)
(credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
A Metropolitan Transportaion Authority (MTA) worker sweeps stairs in an underground tunnel of the long-proposed 2nd Avenue subway line on April 12, 2007.
(credit: Spencer Platt/Getty Images)
(credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
Metropolitan Transportaion Authority (MTA) manager Balbir Sood stands in an underground tunnel for the long-proposed 2nd Avenue subway line on April 12, 2007.
(credit: Spencer Platt/Getty Images)
Second Avenue Subway project (credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
A Metropolitan Transportation Authority (MTA) worker stands beside proposed designs for a completed subway platform in an underground tunnel of the long-proposed 2nd Avenue subway line on April 12, 2007.
Second Avenue Subway project (credit: Spencer Platt/Getty Images)
(credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
New York Gov. Eliot Spitzer speaks at a groundbreaking ceremony in an underground tunnel of the long-proposed 2nd Avenue subway line on April 12, 2007.
(credit: Spencer Platt/Getty Images)
(credit: Spencer Platt/Getty Images)
Second Avenue Subway Construction
New York Gov. Eliot Spitzer emerges from an underground tunnel to the long-proposed 2nd Avenue subway line on April 12, 2007.
(credit: Spencer Platt/Getty Images)
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