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The Chicago Spire was a skyscraper project in Chicago that was partially built between 2007 and 2008 before being cancelled. Located at 400 N. Lake Shore Drive, it would have stood high with 150 floors and been the tallest building in the Western Hemisphere. When originally proposed as the Fordham Spire in July 2005, the design had 116 stories, included a hotel and condominiums, and was topped with a broadcast antenna mast. The building was designed and spearheaded by Spanish architect-engineer
Santiago Calatrava Santiago Calatrava Valls (born 28 July 1951) is a Spanish architect, structural engineer, sculptor and painter, particularly known for his bridges supported by single leaning pylons, and his railway stations, stadiums, and museums, whose sculp ...
and Chicago developer Christopher T. Carley of the
Fordham Company The Fordham Company is a real estate development company founded in 1988 and based out of Chicago, Illinois. The company's chairman is Christopher T. Carley.Fordham Company. (2006 February 1). ''About Us''. Retrieved February 11, 2007, from ht ...
. On March 16, 2006, the
Chicago Plan Commission The Chicago Plan Commission is a commission implemented to promote the ''Plan of Chicago,'' often called the Burnham Plan. After official presentation of the Plan to the city on July 6, 1909, the City Council of Chicago authorized Mayor In many ...
unanimously approved the initial design of the building. On November 4, 2016, a court ruling brought the original development plan and the extended litigation over the nine-year-old project to a close. Developer Garrett Kelleher signed over the property location to the project's biggest creditor, Related Midwest, who announced that they would not build the Spire and released their own site.


Planning

Christopher T. Carley of the
Fordham Company The Fordham Company is a real estate development company founded in 1988 and based out of Chicago, Illinois. The company's chairman is Christopher T. Carley.Fordham Company. (2006 February 1). ''About Us''. Retrieved February 11, 2007, from ht ...
proposed the Fordham Spire in July 2005. In the proposal the Spire was to be a 116-story structure with hotel and condominiums topped by a tall broadcast antenna mast. The initial design of the building was passed unanimously by the
Chicago Plan Commission The Chicago Plan Commission is a commission implemented to promote the ''Plan of Chicago,'' often called the Burnham Plan. After official presentation of the Plan to the city on July 6, 1909, the City Council of Chicago authorized Mayor In many ...
on March 16, 2006, and by the Chicago Zoning Committee on March 23, 2006. On March 29, 2006, the Chicago City of Council also approved the building's design. As part of the approval process, the council passed a measure that raised the height limit on structures at the site to accommodate the design height. The Fordham Spire would have become the second tallest building in the entire world, surpassed only by the Burj Khalifa, and would have become the tallest freestanding structure as well as the tallest building in the
Western Hemisphere The Western Hemisphere is the half of the planet Earth that lies west of the prime meridian (which crosses Greenwich, London, United Kingdom) and east of the antimeridian. The other half is called the Eastern Hemisphere. Politically, the te ...
, surpassing the
CN Tower The CN Tower (french: Tour CN) is a concrete communications and observation tower in downtown Toronto, Ontario, Canada. Built on the former Railway Lands, it was completed in 1976. Its name "CN" referred to Canadian National, the railway c ...
in
Toronto Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the anch ...
. The building was designed by Spanish architect
Santiago Calatrava Santiago Calatrava Valls (born 28 July 1951) is a Spanish architect, structural engineer, sculptor and painter, particularly known for his bridges supported by single leaning pylons, and his railway stations, stadiums, and museums, whose sculp ...
and was being developed by Garrett Kelleher of Shelbourne Development Group, Inc., the then-owner of the St Patrick's Athletic FC.
Chicago Mayor The mayor of Chicago is the chief executive of city government in Chicago, Illinois, the third-largest city in the United States. The mayor is responsible for the administration and management of various city departments, submits proposals and ...
Daley said he approved of the design, stating that it was environmentally friendly. Burton F. Natarus, who was the 42nd-ward alderman when the building was announced, said, "This is a very unique opportunity for the city of Chicago. This building belongs to Chicago and should be in Chicago."
Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who served as the 45th president of the United States from 2017 to 2021. Trump graduated from the Wharton School of the University of P ...
immediately voiced opposition to the building, stating that the tall structure would be a target for terrorists and did not even seem to be a viable project.


Development


Initial financial problems

After several months of development in 2005, Carley failed to obtain sufficient financing for the construction of the building.
Irish Irish may refer to: Common meanings * Someone or something of, from, or related to: ** Ireland, an island situated off the north-western coast of continental Europe ***Éire, Irish language name for the isle ** Northern Ireland, a constituent unit ...
developer Garrett Kelleher, executive chairman of Shelbourne Development Group, Inc., acquired the land and took over the project. It was announced that he would put up 100% of the equity, something Carley had been unable to do. He also had the financial backing to acquire the land, something Carley lacked. Kelleher stated he would consider using Carley's services on the development and that "Carley will be paid an unspecified sum for his involvement in the deal so far." Kelleher later renamed the project "Chicago Spire" after briefly going by "400 North Lake Shore Drive", as it was no longer a Fordham project.


New designs

In the final quarter of 2006, Shelbourne Development issued two separate
press release A press release is an official statement delivered to members of the news media for the purpose of providing information, creating an official statement, or making an announcement directed for public release. Press releases are also considere ...
s regarding the construction and design of the spire. A November 2006 press release stated that construction of the Chicago Spire would begin in June 2007. In early December 2006, Shelbourne Development issued another press release stating that the design of the building had been revised. This included the removal of the hotel and the antenna mast, making the building consist solely of condominium units. The design change altered the building design such that it was wider than the original plan. Additionally, the spire no longer tapered at the top, resulting in an increase in floor space and overall floor count. The revision also removed the separate parking structure from the original plan, instead incorporating underground parking into the spire itself. This first major redesign of the Chicago Spire was criticized by architectural critics and city officials. In late December 2006, the ''
Chicago Tribune The ''Chicago Tribune'' is a daily newspaper based in Chicago, Illinois, United States, owned by Tribune Publishing. Founded in 1847, and formerly self-styled as the "World's Greatest Newspaper" (a slogan for which WGN radio and television a ...
'' reported that the developer was soliciting opinions on a further revision from community leaders. Several weeks following that report the ''
Chicago Tribune The ''Chicago Tribune'' is a daily newspaper based in Chicago, Illinois, United States, owned by Tribune Publishing. Founded in 1847, and formerly self-styled as the "World's Greatest Newspaper" (a slogan for which WGN radio and television a ...
'' held an exclusive interview with architect
Santiago Calatrava Santiago Calatrava Valls (born 28 July 1951) is a Spanish architect, structural engineer, sculptor and painter, particularly known for his bridges supported by single leaning pylons, and his railway stations, stadiums, and museums, whose sculp ...
and lead
developer Developer may refer to: Computers * Software developer, a person or organization who develop programs/applications * Video game developer, a person or business involved in video game development, the process of designing and creating games * Web d ...
Garrett Kelleher. During the interview, Calatrava drew out design ideas restoring the rotating design of the building and showcasing his vision for the Chicago Spire's lobby. On March 26, 2007, further revisions were shown during a public presentation by Shelbourne Development showcasing the most recent design.


Approval

Following the March 26, 2007 public presentation by Shelbourne Development, residents showed a favorable reaction to the newest design of the Chicago Spire. The Chicago Plan Commission approved the final plans of the Chicago Spire on April 19, 2007. Chicago's zoning committee also approved the tower on April 26 and, on May 9, 2007, the Chicago City Council approved the final design of the Chicago Spire.


Marketing

By June 2008, Shelbourne had sold more than 350 of the 1,193 units—more than half of those to foreign investors in markets where certain
United States Securities and Exchange Commission The U.S. Securities and Exchange Commission (SEC) is an independent agency of the United States federal government, created in the aftermath of the Wall Street Crash of 1929. The primary purpose of the SEC is to enforce the law against marke ...
regulations do not apply. Shelbourne announced on September 30, 2008 that the building's penthouse had been sold to
Beanie Babies Beanie Babies are a line of stuffed toys created by American businessman H. Ty Warner, who founded Ty Inc. in 1986. The toys are stuffed with plastic pellets ("beans") rather than conventional soft stuffing. They come in many different forms, ...
manufacturer
Ty Warner H. Ty Warner (born September 3, 1944) is an American billionaire toy manufacturer, businessman, and former actor. He is the CEO, sole owner and founder of Ty Inc. which manufactures and distributes stuffed toys, including Beanie Babies and other l ...
. Kelleher offered to rent out units at a guaranteed 7.5% return to spur sales. The approach is common outside the United States where the tower was marketed more heavily and was meant to spur sales of the smallest units, which are the most likely to be purchased as rental property investments by foreigners.


Financial crisis and suspension of construction

By October 2008, the late-2000s recession was beginning to affect the project. Construction was suspended and the tower's architect, Santiago Calatrava, placed an $11.34 million
lien A lien ( or ) is a form of security interest granted over an item of property to secure the payment of a debt or performance of some other obligation. The owner of the property, who grants the lien, is referred to as the ''lienee'' and the per ...
on the construction site, stating that Kelleher had not yet paid him for his work. Within a few months
Anglo Irish Bank Anglo Irish Bank was an Irish bank headquartered in Dublin from 1964 to 2011. It began to wind down after nationalisation in 2009. In July 2011 Anglo Irish merged with the Irish Nationwide Building Society, forming a new company named the Iri ...
, the primary lender for the project, was on the brink of financial collapse. The bank's stocks had lost nearly all of their value and Anglo Irish Bank was facing nationalization. Due to the bank's dire financial situation, Shelbourne Development was forced to suspend construction, and would eventually have to pay back the $69.5 million (
USD The United States dollar (symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official ...
) it had already borrowed. Additional litigation and liens threatened the project by Autumn 2009. The owner of the
NBC Tower __NOTOC__ The NBC Tower is an office tower on the Near North Side of Chicago, Illinois located at 454 North Columbus Drive (455 North Cityfront Plaza is also used as a vanity address for the building) in downtown Chicago's Magnificent Mile area. ...
in Chicago sued to evict Shelbourne Development from their sales office, where extensive modeling of Chicago Spire units had been installed. The lawsuit alleged that Shelbourne was behind $316,000 (USD) in lease payments. In addition to this and other liens listed on the property,
Bank of America The Bank of America Corporation (often abbreviated BofA or BoA) is an American multinational investment bank and financial services holding company headquartered at the Bank of America Corporate Center in Charlotte, North Carolina. The bank ...
filed a lawsuit against Shelbourne Development for $4.92 million (USD). The lawsuit was an attempt to collect that sum on two unpaid loans used for initial construction at the Chicago Spire site. After these setbacks, the
AFL–CIO The American Federation of Labor and Congress of Industrial Organizations (AFL–CIO) is the largest federation of unions in the United States. It is made up of 56 national and international unions, together representing more than 12 million ac ...
and Kelleher announced in late 2009 that they were discussing the potential for a $170 million (USD) land loan that would retire Kelleher's loan from Anglo Irish Bank, pay off the outstanding liens, and restart work in exchange for making the construction a complete union job. Due to the lack of construction and the sluggish economy, Chicago unions were desperate to find work for their employees as they faced near 30%
unemployment Unemployment, according to the OECD (Organisation for Economic Co-operation and Development), is people above a specified age (usually 15) not being in paid employment or self-employment but currently available for work during the refere ...
. Construction of the Chicago Spire would have provided approximately 900 full-time jobs to union members for four years if construction had resumed. In addition to the $194 million (USD) that Kelleher has invested personally in the project already, backup financing of an unspecified amount and from an unknown source in the form of mezzanine capital and
bridge loan A bridge loan is a type of short-term loan, typically taken out for a period of 2 weeks to 3 years pending the arrangement of larger or longer-term financing. It is usually called a bridging loan in the United Kingdom, also known as a "caveat loan, ...
s has been guaranteed and would have kicked in automatically if the $170 million (USD) AFL-CIO loan had been secured. But within weeks of the official announcement that Kelleher was searching for union
bailout A bailout is the provision of financial help to a corporation or country which otherwise would be on the brink of bankruptcy. A bailout differs from the term ''bail-in'' (coined in 2010) under which the bondholders or depositors of global sys ...
s, four major labor union investment funds declined to offer Shelbourne Development any loans. Kelleher continued to search for financing. Shelbourne Development faced eviction from its offices on the 50th floor of
111 South Wacker Drive 111 South Wacker Drive is a high-rise office building located in Chicago, Illinois. Completed in 2005 and standing at 681 feet (208 m), the 51 story blue-glass structure is one of the tallest in the city. It sits on the site of the former U.S. ...
on which Shelbourne owed $27,600 in unpaid rent. Earlier in the year, the spire's Chicago sales office had been ejected from the nearby
NBC Tower __NOTOC__ The NBC Tower is an office tower on the Near North Side of Chicago, Illinois located at 454 North Columbus Drive (455 North Cityfront Plaza is also used as a vanity address for the building) in downtown Chicago's Magnificent Mile area. ...
. In October 2010 Anglo Irish Bank Corp. filed a $77 million foreclosure lawsuit against Kelleher, claiming that loans made to Kelleher's development company had been in default for a year. The bank was expected to take possession of the site. By the end of the year, courts handed control of the site to a receiver, leaving the project (at the time) dead. In addition, two Chicago firms purchased the tax lien certificates on the property.


End of the project

In 2013, with the Chicago Spire site for sale by Ireland's National Asset Management Agency (NAMA), interest resumed, drawing in at least a half-dozen offers for the property. Under the involuntary bankruptcy ruling in October 2013, Shelbourne had until the end of March 2014 to obtain approval of a reorganization plan, and was considering a bid to take back control of the property, reigniting hope that the skyscraper might actually be built. In February 2016, Shelbourne sought court approval to take up an offer of up to $135 million from Atlas Apartment Holdings intended to underpin the project's emergence from bankruptcy, with a deadline of August 31, 2016 for having a court-approved reorganization plan. At a hearing on March 11, 2016, Shelbourne announced that it had reached agreement on a repayment plan with the project's creditors, including Related Midwest, which had bought up much of the project's debt. Assuming the project finds funding to satisfy that agreement, Atlas said that the building would be built and that Atlas would control the project, but that Kelleher would still be the developer, with the intention of building the same building planned prior to the suspension of construction. However, on October 31, 2014, the developer failed to make a required payment to Related Midwest and Related filed suit to compel Shelbourne to turn over the deed to the property. On 4 November 2016, Garrett Kelleher signed over the property located at 400 N. Lake Shore Drive to Related Midwest. President Curt Bailey said that Related Midwest would not build the Spire. In early 2018, the former developer Garrett Kelleher launched a $1.2 billion (USD) lawsuit, in the US Federal District Court in Illinois, against NAMA alleging that the agency destroyed his chances of building the Chicago Spire through a combination of "sheer spite" and "consistent incompetence". The lawsuit is formally brought by Kelleher's company, Shelbourne North Water Street Corporation.


Future site development

In 2016, ''
Crain's Chicago Business ''Crain's Chicago Business'' is a weekly business newspaper in Chicago, IL. It is owned by Detroit-based Crain Communications, a privately held publishing company with more than 30 magazines, including ''Advertising Age'', ''Modern Healthcare'' ...
'' reported that Related Midwest had hired former SOM architect Michael Pfeffer to guide the design of developments on the former Chicago Spire site. Although President Curt Bailey disclosed no project details—such as whether, for example, Related Midwest plans to build one big tower or multiple structures on the site—he did announce the development firm's intent to discuss plan outlines with the public in 2017. In 2018, it was revealed that Related Midwest will build two skyscrapers at the site of the Spire. The taller of the two would include 300 condominiums and a 175-room luxury hotel and the other 550 apartments. The two tower plan has been approved by the city and the development will be called 400 Lake Shore Drive.


Location

The skyscraper was being constructed at 400 N. Lake Shore Drive, on Chicago's waterfront west of
Navy Pier Navy Pier is a pier on the shoreline of Lake Michigan, located in the Streeterville neighborhood of the Near North Side community area in Chicago, Illinois, United States. Navy Pier encompasses over of parks, gardens, shops, restaurants, family ...
and northeast of the Loop, in the Streeterville neighborhood of the Near North Side community area. The site is at the junction of Lake Michigan and the
Chicago River The Chicago River is a system of rivers and canals with a combined length of that runs through the city of Chicago, including its center (the Chicago Loop). Though not especially long, the river is notable because it is one of the reasons for ...
, and is bordered by the Ogden Slip of the Chicago River to the north, North Lake Shore Drive to the east, the Chicago River to the south, and existing residential property to the west. The site was originally zoned for two 35 to 50-story buildings. Originally, it was to be sold by a
joint venture A joint venture (JV) is a business entity created by two or more parties, generally characterized by shared ownership, shared returns and economic risk, risks, and shared governance. Companies typically pursue joint ventures for one of four rea ...
of LR Development Company of Chicago and JER Partners of Virginia for $64 million to Christopher Carley of the Fordham Company. After numerous short-term extensions, and later Carley's failure to obtain financing, Kelleher of Shelbourne Development purchased the land instead and pledged to finance the rest of the project.


DuSable Park

When the project was first announced, the Fordham Company pledged almost $500,000 to assist in the development of the city's proposed DuSable Park, which would adjoin the property of the Chicago Spire., DuSable Park would cover and a $11.4 million budget was planned for its renovation. On March 26, 2007, Shelbourne pledged to pay $6 million toward the development of the park, making up the deficit left over from the city's own initial pledge of $6 million and far exceeding the Fordham Co's initial offer. In May 2007 Shelbourne's pledge jumped to $9.6 million. Soil tests performed in December 2000 on the soil of the proposed park showed contamination of
radioactive Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is consi ...
thorium Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft and malleable and has a high ...
. Thorium was used by the Lindsay Light Company, which operated a location nearby. After the closing of the location in the 1930s, contaminated soil was dumped on the location of the proposed park. In March 2003, the Chicago Park District stated that the thorium clean-up on that land was incomplete. Hazards of contamination can be avoided by laying a minimum of of concrete over any affected soil, an approach that would be more feasible for the site of the Chicago Spire than for the adjacent park. In 2012 the Chicago Park District received funding from the EPA for remediation of the site, bagging the radioactive soil and shipping it to a Superfund site. By summer 2013 the Park District website reported the remediation had been completed by September 2012.Retrieved 24 June 2013, from http://www.chicagoparkdistrict.com/parks/Dusable-Park/


Architecture

As with many of his designs, Calatrava was inspired by themes and designs in
nature Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are ...
for the tall, twisting skyscraper. He likened the structure to an imaginary smoke spiral coming from a campfire near the
Chicago River The Chicago River is a system of rivers and canals with a combined length of that runs through the city of Chicago, including its center (the Chicago Loop). Though not especially long, the river is notable because it is one of the reasons for ...
lit by Native Americans indigenous to the area, and also related the building's newly designed pinnacle to the "graceful" and "rotating forms" of a snail shell. Standing at , the Chicago Spire would have further transformed the always-growing Chicago skyline. Plans for the tower included 1,193 condominiums with each of the building's 150 stories rotated 2.4 degrees from the one below it for a total 360-degree rotation. In February 2008, prices for the condominiums were announced as ranging from $750,000 to US$40 million. For supplemental structural support, each floor was to be surrounded by
cantilever A cantilever is a rigid structural element that extends horizontally and is supported at only one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cant ...
ed corners and four concave sides. Similar to the
Willis Tower The Willis Tower (originally the Sears Tower) is a 108- story, skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM ...
(formerly Sears Tower) and
John Hancock Center The John Hancock Center is a 100- story, 1,128-foot supertall skyscraper located in Chicago, Illinois. Located in the Magnificent Mile district, the building was officially renamed 875 North Michigan Avenue in 2018. The skyscraper was designed ...
observation decks, the Chicago Spire design included a community room on the top floor offering residents a view of four U.S. states. The design for the soaring four story
lobby Lobby may refer to: * Lobby (room), an entranceway or foyer in a building * Lobbying, the action or the group used to influence a viewpoint to politicians :* Lobbying in the United States, specific to the United States * Lobby (food), a thick stew ...
of the skyscraper included translucent glass walls framed by arching, steel-reinforced concrete vaults. The building has been described as a giant "drill bit" by the public and others in the media have likened it to a "tall twisting tree" and a "blade of grass". The curved design offered two major benefits to the structure of the building. First, curved designs, such as that found in Calatrava's
Turning Torso Turning Torso is a neo-futurist residential skyscraper built in Malmö, Sweden in 2005. It was formerly the tallest building in the Nordic region until September 2022, when it was surpassed by Karlatornet in Gothenburg, which is still under ...
in Malmö, Sweden, tend to add to the strength of a structure. A similar principle has been used in the past with curved stadium roofs. In addition to structural support, the curved face of the exterior would minimize wind forces. In rectangular buildings, a fluid wind flow puts pressure on the windward face of the building; while air moves around it, a suction is applied to the leeward face. This often causes a sway in tall buildings usually counteracted, at least partially, by stiffening the structure or by using a dynamic wind damper. Since the curved design of the Chicago Spire would not completely negate wind forces, a tapering concrete core and twelve
shear wall In structural engineering, a shear wall is a vertical element of a system that is designed to resist in- plane lateral forces, typically wind and seismic loads. In many jurisdictions, the International Building Code and International Residential Co ...
s radiating from it were planned to counteract the remaining wind load. Additionally, the Chicago Spire was designed with world-class
sustainable engineering Sustainable engineering is the process of designing or operating systems such that they use energy and resources sustainably, in other words, at a rate that does not compromise the natural environment, or the ability of future generations to meet ...
practices to meet Leadership in Energy and Environmental Design Gold recognition. Sustainable features included recycled rainwater, river water used for cooling, ornithologically-sensitive glass to protect migratory birds, intelligent building and management systems, waste storage and recycling management, and monitored outdoor air delivery.


Construction

Following the city approval, it was announced that construction of the Chicago Spire was to begin in the summer of 2007, with caisson work scheduled to begin as early as June 2007. DuSable Park was designated as a
staging area A staging area (otherwise staging point, staging base, or staging post) is a location in which organisms, people, vehicles, equipment, or material are assembled before use. It may refer to: * In construction, a designated area in which vehicles, ...
for the construction of the tower. The sales center for the Chicago Spire opened on January 14, 2008. On September 19, 2008, a spokeswoman for the developer announced that construction was continuing on the building, but that the pace of construction would be slowed until the financial markets recovered from the subprime mortgage crisis. Kelleher promised that he still had financial backing, although analysts questioned the ability of the project to survive the current economic decline. A contractor to build the building's superstructure had not yet been named. The October 1, 2008 edition of ''
The Wall Street Journal ''The Wall Street Journal'' is an American business-focused, international daily newspaper based in New York City, with international editions also available in Chinese and Japanese. The ''Journal'', along with its Asian editions, is published ...
'' said that the building foundation was complete and the above ground construction would not continue until the markets recover. The Spire has remained a fenced-off hole in the ground at 400 N. Lake Shore Drive since 2008. But before Shelbourne faced financial difficulties and was forced into bankruptcy, about 370 of the planned 1,200 luxury condos were sold, half of which were to people outside the U.S., according to the suit. “Shelbourne remains the only person logically capable of completing it because it still owns the intellectual property necessary to construct it and it still maintains the goodwill of the diverse governmental and community interests without which a project of this dimension would be doomed,” the lawsuit states.


Underground phase

Crane parts and construction equipment arrived at the site on June 25, 2007. The following day Shelbourne Development officially announced the first construction contract. In preparation for construction, 34 concrete and steel caissons were drilled into bedrock underground; this was completed June 25, 2008. A
cofferdam A cofferdam is an enclosure built within a body of water to allow the enclosed area to be pumped out. This pumping creates a dry working environment so that the work can be carried out safely. Cofferdams are commonly used for construction or re ...
with a diameter and depth was installed to create a work environment and would have later acted as a
foundation Foundation may refer to: * Foundation (nonprofit), a type of charitable organization ** Foundation (United States law), a type of charitable organization in the U.S. ** Private foundation, a charitable organization that, while serving a good cause ...
for the building's core. Utility upgrades were planned for the surrounding neighborhood.


Images

File:Lake Shore Drive.JPG, View of the site in 1963 File:Fordham Lot2.JPG, Months before construction on April 13, 2006 File:ChicagoSpireAug22,20071.JPG, Bedrock being drilled on August 22, 2007 File:ChicagoSpire from LakePointTower 1 12 08 closeup.JPG, Closeup of base excavation January 12, 2008 File:ChicagoSpire 05 25 08.jpg, May 25, 2008 File:WorkSite.JPG, The site as of July 2, 2010 File:Chicago Spire Hole 2021.jpg, The Chicago Spire Hole as of July 30, 2021


See also

*
List of skyscrapers This list of tallest buildings includes skyscrapers with continuously occupiable floors and a height of at least . Non-building structures, such as towers, are not included in this list (for these, see '' List of tallest buildings and structu ...
*
List of tallest buildings in Chicago A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby unio ...
*
List of tallest buildings in the United States The world's first skyscraper was built in Chicago in 1885. Since then, the United States has been home to some of the world's tallest skyscrapers. New York City, specifically the borough of Manhattan, notably has the tallest skyline in the cou ...
*
List of buildings with 100 floors or more This is a list of buildings with 100 floors or more above ground. Dubai and Chicago have three buildings with at least 100 floors. Completed buildings This list includes buildings whose construction is complete, or are topped-out. Building ...
*
World's tallest structures The world's tallest human-made structure is the Burj Khalifa in Dubai (of the United Arab Emirates). The building gained the official title of "tallest building in the world" and the tallest self-supported structure at its opening on January ...


References

Notes Further reading *Keegan, E. (2005). Calatrava designing massive tower in Chicago. ''
Architectural Record ''Architectural Record'' is a US-based monthly magazine dedicated to architecture and interior design. "The Record," as it is sometimes colloquially referred to, is widely-recognized as an important historical record of the unfolding debates in a ...
'', 193, 29. *McKeoug, T. (2006). Artist at work: Santiago Calatrava. ''Azure'', 22, 56–61. *Nobel, P. (2005). Onward and upward? Four years after 9/11 – at perhaps the peak of the real estate bubble – very tall has never been hotter. ''Metropolis'', 25, 66–72. *Pridmore, J., & Larson, G.A. (2005) ''Chicago Architecture and Design : Revised and expanded''. Harry N. Abrams, Inc.: New York.


External links

{{good article Proposed skyscrapers in the United States Unfinished buildings and structures in the United States Residential skyscrapers in Chicago Santiago Calatrava structures Twisted buildings and structures Residential condominiums in Chicago