Chicago Spire Caisson Construction
The Chicago Spire is a supertall skyscraper under construction in Chicago, Illinois. The skyscraper will become North America’s tallest free-standing structure and the world’s tallest all-residential building, eventually standing taller than Chicago’s Sears Tower and New York’s upcoming Freedom Tower, as well as Toronto’s CN Tower.
The building was designed by Spanish architect Santiago Calatrava and is being developed by Garrett Kelleher of Shelbourne Development Group, Inc. The Chicago Spire is scheduled to be completed in 2011 with 150 floors.
Originally announced in July of 2005 by Christopher T. Carley of the Fordham Company, the project was supported by many Chicagoans and city officials. After several months of development, Carley failed to acquire necessary financing and the project was taken over by Garrett Kelleher of the Shelbourne Development Group. Three major revisions have been made since that time.
Work began in June 2007 and in preparation, a cofferdam over 100ft wide and 120 ft deep will be installed that will later act as a foundation for the building. These are some photos of the early stage of construction. And all I can say is – that’s a big hole. In the background of the last photo, the Trump Tower construction can be seen in the background.