4
World Trade Center
Structural steel is now topped out at the 72nd floor, with only roof
bulkhead and upper mechanical construction left. The curtain wall installation,
which began in late April 2011, has reached the 58th floor. Both the
below-grade mechanical work and the fireproofing and masonry work are
advancing. In addition, the utility work along Liberty Street and Greenwich
Street (inside the work site fence) has been active since late July and will
continue through August of this year. Two cranes are now active on the site and
elevator shaft work is underway.
3
World Trade Center
Erecting forms, rebar and concrete placement for decks and walls is proceeding,
as is the at grade utilities installation. Two tower cranes are now active. The at-grade steel superstructure work has been active since April 2011 and the
tower's lower podium will reach its full seven-story height in September, 2012.
2
World Trade Center
Current work at 2 World Trade Center includes completing the street level
superstructure steel and concrete. Installation of the building mechanical
systems continues throughout the B1-B4 basement levels. The building is
expected to be completed to street level in the fall of 2012.
1
World Trade Center
Under the Port Authority's supervision, tower steel has topped out at the 105th floor with the installation of glass curtain wall above the 82nd floor
and concrete floors poured above the 93rd floor. The elevator shaft fit-outs
and spray-on fireproofing are both underway as are the utility installation and
tie-ins. The "cocoon" safety system is now in place around the upper
perimeter and will continue to rise with the building. The installation of the
408-foot-tall telecommunications spire is expected by end of summer 2012.
World Trade Center
Transportation Hub
Steel erection for the Transportation
Hub oculus substructure has begun as well as construction on the connection to
the Vehicular Security Center. Steel and concrete has also been placed
underneath the 1 subway line along the Greenwich Street corridor. Preparations
are being made installation of the east arch truss. The Transportation Hub
construction contract was awarded to Skanska in summer 2010. Construction of
the West Street pedestrian underpass (the "east-west connector") ,
linking the World Trade Center with Battery Park City's World Financial Center,
is now active on the west side of the WTC site ( just south of 1 WTC and across
West Street). The east-west connector structural components are being installed
across West Street.
National September 11
Memorial and Museum at the World Trade Center
The National September 11 Museum is in
the midst of interior fit-out and artifact installation in the underground
space with the opening date TBA. With more than 225 trees now on site, more
soil installation and tree planting is underway and will continue in phases
through 2013. Utilities, waterproofing, and other activities are progressing
with both structural steel and façade installation are complete at the
above-ground Memorial Pavilion; The interior fit-out is now underway. The
Memorial reflecting pools and waterfalls were commissioned in late August 2011
with the bronze nameplate installation completed in June 2011. The
"Survivors Stairway" was relocated to its permanent home in the
underground Memorial in December 2008 and the Slurry wall reinforcement was
completed in spring 2009. 75% of the Memorial Plaza opened on September 11,
2011 and has hosted over 4 million visitors to date.
World Trade Center
South Bathtub / Vehicular Security Center
South Bathtub "Phase 1" is
the site bounded by Liberty, West, Cedar, and Washington. Work there includes
steel and concrete installation and welding. A tower crane is mobilized inside
the site at West and Liberty Street. South Bathtub "Phase 2" is the
site bounded by Liberty, Washington, Albany, and Greenwich (the former 130
Liberty site). Work there includes concrete placement and steel erection. Port
Authority crews are now working daily double shifts at the South Bathtub, with
occasional extended hours to 1 a.m. The 130 Liberty Street site turnover to the
Port Authority took place in late February 2011 and preliminary design research
is currently underway for the future Liberty Street Park. The reconfigured
Liberty Street Bridge opened April 21, 2010 followed by the removal of the
historic ship discovered on site took place in July 2010.