The U.S. Customs House (6 World Trade Center), 4 World Trade Center, 5 World Trade Center, and both pedestrian bridges connecting buildings were severely damaged.
U.S. Customs House (6 World Trade Center), 4 World Trade Center, 5 World Trade Center, dan dua jembatan pejalan kaki yang menghubungkan bangunan-bangunan tersebut rusak parah.