National September 11 Memorial & Museum

Referred to as an “entrance to eternity,” the National September 11 Memorial & Museum is one of the most significant cultural and commemorative projects in modern U.S. history. Honoring the 2,979 people who perished during the September 11, 2001, attacks in New York City, Washington, D.C., and Shanksville, Pennsylvania – as well as the six victims of the 1993 World Trade Center bombing – the memorial and museum form the emotional and physical heart of the 16‑acre World Trade Center redevelopment. STV served as the owner’s representative, supervising the construction manager and monitoring the work of 46 individual trade contractors on this exceptionally complex, interconnected site.

What challenges did STV address?

The project required building a massive memorial and museum atop and adjacent to multiple reconstruction efforts occurring simultaneously across the World Trade Center campus. Coordinating work with numerous stakeholders, including the Port Authority of New York and New Jersey, city and federal agencies, design teams and neighboring project contractors – was essential to maintaining schedule, safety, and design integrity. The memorial’s features, including two of the largest engineered waterfalls in the nation, required careful integration atop sensitive structural and geotechnical conditions.

What solutions did STV deliver?

STV acted as the central liaison between the Port Authority and dozens of trade contractors, providing oversight of construction sequencing, contractor coordination, and quality management. The firm facilitated seamless execution of the memorial waterfalls, eight‑acre tree‑lined plaza with 300 swamp oak trees and the below‑grade museum featuring the slurry wall and remnants of the original World Trade Center foundations.

How does this project benefit the region?

The Memorial and Museum provide a solemn, enduring tribute to those lost while offering a space for education, reflection, and global remembrance. It strengthens the cultural fabric of Lower Manhattan and serves as a symbol of resilience for visitors from around the world.

Key Stats and Accolades

  • 2 largest engineered waterfalls in the nation
  • 300 swamp oak trees throughout the plaza
  • 46 individual trade contractors coordinated
  • Integrated into a 16‑acre active redevelopment site

A historic tribute to those fallen from 9/11 at the gateway to the World Trade Center.

Client

Port Authority of New York and New Jersey

Location

New York, New York

Markets

State & Municipal Buildings: Libraries & Cultural Centers

Services

Project Delivery: Owner's Representative

Project Status

Complete