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No. 7 Line Extension

Manhattan, New York
New York City Transit Authority, part of the Metropolitan Transit Authority
RailWorks Business Unit 
L.K. Comstock & Company
RailWorks Transit

RailWorks is working on this $513.7 million project with joint venture partner Skanska USA to furnish and install systems and finishes on the subway extension from Times Square to W. 25th Street and 11th Avenue in Manhattan, N.Y.


L.K. Comstock is performing the following electrical work:

  • Installing the signal system on the new extension, including 45 signal/stops and two relay rooms,
  • Installing the communications and electrical systems as well as related alarms and tunnel lighting
  • Installing the traction power system for the third rail
  • Installing 60,000 feet of antenna cable

RailWorks Transit is constructing approximately 14,000 LF of track, including two turnouts. Crews also are performing all related plumbing and mechanical services.

The 35-month project will be completed in June of 2014.

Unique Features 

The 7 Line Extension will bring the Flushing Line to 34th Street & 11th Avenue, at the heart of what will be Manhattan's newest neighborhood. The subway extension will make it possible for new housing, restaurants and entertainment to grow on the Far West Side. And the new subway terminal will also improve service reliability for all riders of the 7 Line in Queens and Manhattan by providing additional storage space for trains.

Other participants 
Skanska USA, joint venture partner