WTC and ECB Credit: (L-R) Empire State Building (Getty); Rendering of 1 WTC (Silverstein Properties Inc.)

One World Trade Center could become the tallest building in the city by early next week, taking the crown from the Empire State Building, the Port Authority said Tuesday.

The building, which currently stands at 100 floors 1,244 feet and six inches above ground, will likely surpass the ESB's height of 1,250 feet by Monday, if weather allows, the Port Authority said.

"Within the next several days, weather permitting, perhaps as early as Monday ... One World Trade Center will be the tallest building in Manhattan," Pat Foye, executive director of the Port Authroity, told reporters yesterday at Crain's Breakfast Forum.

Before their destruction in the Sept. 11, 2001, terrorist attacks, the original World Trade Center's twin towers had been the city's tallest skyscrapers since 1972.

One World Trade Center, which has been under construction for six years, is slated for completion sometime in 2013 or early 2014. It will eventually reach 1,776 feet at 104 floors, not including its antenna spire, the Port Authority said.

Once completed, it will be the tallest building in the Western Hemisphere.

About half of the office space in the building has already been leased out, including a massive 1.1-million-square-foot deal with magazine publisher Condé Nast for 25 years that is valued at $2 billion.

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