Project Details

JV Partner
Metropolitan Transportation Authority, New York City Transit Authority
$336.9 million
May 2009
Start Date
November 2015
Completion Date

Building 2nd Avenue Subway 96th Street Station

The scope of this project was to construct the shell of the 96th Street Station for the 2nd Avenue Subway. This cut and- cover project encompassed 2nd Avenue from 91st Street to 100th Street on the upper Eastside of Manhattan. It involved the relocation of major utilities (i.e. sewer, water, gas, electrical and telephone), the construction of slurry walls, the installation of secant–pile support of excavation systems, the installation of bracing for support of excavation, the installation of curb-to-curb roadway decking, mass excavation and the placement of the reinforced concrete base slab. This project also included the underpinning of several buildings using jetgrouting, compaction grouting, compensation grouting and mini-piles.

Construct shell of 96th Street Station for 2nd Avenue Subway Line

Installation of more than 211,000 square feet of slurry wall and more than 43,000 square feet of secant pile wall

Key project elements include:
  • Installation of more than 211,000 square feet of slurry wall
  • Installation of more than 43,000 square of secant pile wall
  • Placement of 41,200 cubic yards of concrete
  • Installation of more than 6,500 tons of reinforcing steel
  • Placement of 76,000 DF of temporary precast concrete deck
  • Installation of more than 2,000 tons of steel deck beams
  • Installation of 5,800 tons of wales and struts
  • Excavation and disposal of 245,000 cubic yards of material
  • Excavation and disposal of MGP contaminated material
  • Relocation of more than 3.5 miles of utilities within a quarter mile stretch
  • Site dewatering
  • Underpinning of building foundations
  • Numerous improvements to existing building foundations
  • Installation of mini piles
  • Jet grout work under sensitive buildings
  • Compaction grouting under building foundations
  • Compensation grouting under fragile buildings
  • Removal of mini piles and helical piles
  • Installation of extensive AMTS monitoring system for building movements
  • Environmental impact mitigation and controls associated with air, noise and emissions
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