World Trade Center Slurry Wall

The Kiewit-led joint venture was contracted to install an 80,000 square-foot slurry wall structure measuring 1,200 feet long and ranging in depth from 70 to 120 feet along the eastern portion of the major bathtub. The structure surrounds the foundation of the Transit Hub for the Port Authority of New York and New Jersey, its north-south pedestrian concourses and World Trade Center (WTC) buildings 2, 3 and 4. The wall was constructed in stages along Liberty, Church and Vesey Streets to secure the existing structure that was damaged as a result of the 9/11 attacks.

Once the new slurry walls were completed, the interior of the eastern portion of the site was excavated to bedrock connecting a significant portion of the existing Hudson and Manhattan Railroad basement wall along Church Street to expand the existing bathtub structure for the eastern portion of the WTC Site. The WTC Memorial and Freedom Tower were constructed within the existing slurry wall referred to as the west bathtub, which was constructed in 1967.