Inside The Construction Of New York City’s New Subway

Newly released photos let you see underground construction in progress.

The tunnel at the 63rd Street and Lexington Avenue station is being expanded to run trains from the planned Second Avenue Subway. Metropolitan Transportation Authority/Patrick Cashin

New York City’s Second Avenue subway line was the greatest project the city never built — until 2007, almost 90 years after its initial proposal, when the city finally broke ground on it. When completed, the $4.45 billion project will provide New Yorkers with two more miles of commutable subway tunnels on Manhattan’s East Side.

Photos released on the MTA’s Flickr page show a few pieces of the new route in-progress–and just how hard it is to dig a miles-long tunnel under a densely-populated island city.

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