1 World Trade Center Office Tower Reaches Halfway Point as Steel is Erected to 52nd Floor / Tishman Managing Construction of What Will be Tallest Building in the U.S.

NEW YORK, Dec. 16, 2010 /PRNewswire/ -- Steel at 1 World Trade Center (WTC) today reached the 52nd floor--more than 600 feet above street level--on what will be a 104-floor, 3.5-million-gross square foot commercial tower. At a height of 1,776 feet upon completion, the tower will be the tallest building in New York City and the United States. Tishman Construction Corporation (TCC) is serving as construction manager on 1 WTC for the owner, the Port Authority of New York & New Jersey, and was the builder of the original World Trade Center complex. TCC is part of AECOM Technology Corp. , a Fortune 500 provider of professional technical and management support services for government and commercial clients around the world.

(Photo: http://photos.prnewswire.com/prnh/20101216/NY19117 )

"As the builder of the original towers, our history and connection to the site makes us especially proud of the role we're playing at the World Trade Center today. We share in the excitement of the thousands of people who drive up and down the west side of Manhattan as 1 World Trade Center comes into view," said Daniel R. Tishman, Chief Executive and Chairman of Tishman Construction and Vice Chairman of AECOM. "Progress at the World Trade Center is undeniable, as demonstrated by the fact that we continue to add one floor a week to the structure. We salute the iron workers with DCM Erectors who have taken the structure to this level and all the trades men and women on the project."

With a workforce of more than 750 on site daily, workers have placed more than 125,000 cubic yards of concrete and 26,000 tons of steel at 1 WTC to date. More than 500,000 square feet have been built below grade, before the tower began to rise above street level. In the most visible sign of construction progress at the site, 1 WTC is now visible from parts of Midtown Manhattan and from several vantage points around downtown. The building is being designed and built to LEED Gold standards.

Tishman Construction is serving as construction manager for WTC Towers 3 and 4 for which Silverstein Properties is the developer; the WTC Transportation Hub; and the Vehicle Security Center at the site. In addition, Tishman built 7 World Trade Center, the first tower to rise after September 11, 2001. 7 WTC opened in 2006, and was the first office building to achieve LEED Gold Certification in New York.

About Tishman Construction Corporation

Founded in 1898, Tishman Construction Corporation (http://www.tishmanconstruction.com/) is one of the world's leading builders, and is currently ranked as the #1 Construction Manager in the region, based on the value of construction put in place, and #1 Green Builder, based on the value of sustainable construction put in place. It is currently managing construction of the new headquarters for the U.S. Department of Homeland Security in Washington, D.C. and major projects in Boston, Philadelphia, Chicago, New Jersey, California and Abu Dhabi.

Tishman is part of AECOM Technology Corp. , a global provider of professional technical and management support services to a broad range of markets, including transportation, facilities, environmental, energy, water and government. A Fortune 500 company, AECOM's approximately 52,000 employees serve clients in more than 100 countries, and the company had revenue of $6.5 billion during its fiscal year 2010. More information on AECOM and its services can be found at http://www.aecom.com/.

1WTC Reaches 52nd Floor 12'10

Photo: http://photos.prnewswire.com/prnh/20101216/NY19117
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Tishman Construction Corporation

CONTACT: John Gallagher, Tishman Construction Corporation,
[phone], [e-mail]; or Barbara Wagner, Rubenstein
Associates, [phone], [e-mail]

Web Site: http://www.tishmanconstruction.com/