<Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The new 81 - story building, when completed, will have a total height of 1,340 feet (410 m). In comparison, the Empire State Building's roof at the 102nd floor is 1,250 feet (380 m) tall, 1,454 feet (443 m) with its antenna, and the original 2 World Trade Center (referred to as the South Tower) was 1,362 feet (415 m). </P> <P> The tower was originally designed by Foster and Partners, based in London, but has since been redesigned by the Bjarke Ingels Group (BIG). In Foster and Partners' design, the structural engineer for the building was WSP Cantor Seinuk, who has been retained for the building's redesign by BIG . </P> <P> In the original plan, the building's sloping roof consisted of four diamonds inclined toward the memorial which would have provided a visual marker around the skyline of just where the original towers were . The tower was designed to resemble a diamond, with cross bracing intersects and indentations breaking up the sides . The Port Authority of New York and New Jersey said the following about 200 Greenwich Street's wedged rooftop: "Designed by Lord Foster, the tower incorporates WTC master planner Daniel Libeskind's' wedge of light' concept, and will cast no shadow on the memorial park on September 11 ." The total floor space of 200 Greenwich Street was anticipated to include 2,400,000 square feet (220,000 m) of office space and another 130,000 square feet (12,000 m) for retail shops and access areas to the underground World Trade Center PATH station . </P>

When will two world trade center be completed