The WTC Cortlandt Street Station rehabilitation was the final piece to restore the World Trade Center’s transportation capacity after the Sept. 11 attacks. Work on the completely destroyed station had to wait for millions of sq ft of construction to proceed, with the project’s $101-million second phase starting in 2015.

The 30,000-sq-ft main station area serving New York’s No. 1 subway line features two 700-ft-long platforms, linked by a lower mezzanine level that connects to the WTC Transportation Hub. The Cortlandt station added full ADA accessibility, air-tempering, security and life-safety systems to serve an expected 3.6 million passengers annually.

Project tasks included demolishing and replacing track slabs, ties and 2,400 ft of rail as well as adding communications, mechanical and maintenance spaces. Crews drilled 500 segmented minipiles through the top of the existing structure to support 600 ft of excavation before installing permanent concrete slabs and walls—with one judge lauding the “staggering complexity” of the project.

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