The final silver spire piece of One World Trade Center was fully installed on the building's roof early Friday morning, bringing the structure's height to 1,776 feet.

The New York Daily News reported that the new $3 billion project consists of 105 floors, about the same height as the original North Tower which crumbled down on Sept. 11, 2001. It became the tallest building in America, surpassing the Chicago's Willis Tower.

"It's a pretty awesome feeling," said project manager Juan Estevez who watched with workers on a platform. "It's a culmination of a tremendous amount of team work ... rebuilding the New York City skyline once again."

Esteves said that the workers around him were very excited to see their hard work pay off.

The Huffington Post reported that the installation of the spire was completed after pieces of it had been transported to the roof of the building last week.

"I am very happy, but also sad, because why did we have to rebuild this tower? It's a proud day for the city," said Philip English, one of a couple dozen construction workers witnessed the completion of the spire.

People chimed in on Twitter about the completion of the spire and took pictures of the scene.

"This really is a symbolic moment because this building really represents the resiliency of this country," Port Authority Vice Chair Scott said. "These people, the thousand men and women who have worked here tirelessly, really as a tribute for the people that perished on 9-11 right on this site."

The tower is scheduled to open for business in 2014.

Tenants of One World Trade Center include magazine publisher Conde Nast, the government's General Services Administration and Vantone Holdings China Center.

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