Question: When was the city in the United States with a 85 floor tall building under construction founded ?

text: List of tallest buildings in the United States
Tallest under construction , approved and proposed -- Approved and proposed
This lists buildings that are proposed for construction in the United States and are planned to rise at least 700 feet ( 213 m ) . A floor count of 50 stories is used as the cutoff for buildings whose heights have not yet been released by their developers .
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. Eleven American buildings have held the title of tallest building in the world (9 in New York City). New York City and Chicago have always been the centers of American skyscraper building. The 10-story Home Insurance Building, built in Chicago in 1885, is regarded as the world's first skyscraper; the building was constructed using a novel steel-loadbearing frame which became a standard of the industry worldwide. Since its topping out in 2013, One World Trade Center in New York City has been the tallest skyscraper in the United States. Its spire brings the structure to a symbolic architectural height of 1,776 feet (541 m), connoting the year the U.S. Declaration of Independence was signed, though the absolute tip (or pinnacle) of the structure is measured at 1,792 ft (546 m). However, the observation deck elevation and highest occupied floor of One World Trade Center are surpassed by 432 Park Avenue and Chicago's Willis Tower (formerly and still commonly known as the Sears Tower). Steinway Tower, and Central Park Tower will also have higher occupied floors and roofs upon their completion. Prior to the September 11, 2001 attacks in New York City, the twin towers of the World Trade Center occupied the second and third positions on the list below, behind Willis Tower. The North Tower stood at 1,368 feet (417 m), while the South Tower was 1,362 feet (415 m) tall.
Name City Height ft ( m ) Floors Year ( est . ) Notes
Tower Fifth New York 1,556 ft ( 474 m ) 96 2022 Tower Fifth is a slender office tower proposed by 432 Park Avenue developer Harry B. Macklowe of Macklowe Properties , would become the second tallest tower in the Western Hemisphere after One World Trade Center if completed as planned
350 Park Avenue New York Approximately 1,450 ft ( 442 m ) 72 2024+ 350 Park Avenue has been quietly proposed by Vornado Realty Trust after a marketing brochure leaked renderings ; the Foster and Partners -designed building would replace BlackRock 's current headquarters after the company moves to 50 Hudson Yards in 2022
80 South Street New York 1,438 ft ( 438 m ) 113 - As of June 2019 , the site is for sale after Chinese developer Oceanwide Holdings ran into financial difficulties
270 Park Avenue ( reconstruction ) New York 1,425 ft ( 434 m ) 70 2024 JPMorgan Chase plans to demolish & replace its headquarters ; the new tower was approved by the New York City Council in May 2019
Tribune East Tower Chicago 1,422 ft ( 433 m ) 116 - Would become the second-tallest building in Chicago upon completion
15 Penn Plaza New York 1,216 ft ( 371 m ) 68 - Proposed by Vornado prior to the financial crisis of 2007-2008 ; as of 2019 the developer is still seeking an anchor tenant to justify construction . New renderings leaked from a marketing brochure in June 2019 depict a tower around 1,400 feet ( 430 m ) with a new design
2901 Arch Street - Transit Terminal Tower Philadelphia 1,200 ft ( 366 m ) 85 2025-28 Proposed office and retail
Dallas Smart District Tower Dallas 1,121 ft ( 342 m ) 78 2020s Proposed office tower would be the tallest in Texas and tallest west of the Mississippi River
333 South Figueroa Los Angeles 1,108 ft ( 338 m ) 77 - Proposed hotel by Shenzhen New World Group , tallest proposed tower West of Mississippi River
400 Lake Shore Drive South Tower Chicago 1,100 ft ( 335 m ) 76 - Currently stalled due to objections from Alderman Brendan Reilly
520 West 41st Street New York 1,100 ft ( 335 m ) 106 - Proposed in 2014 by World Trade Center developers Silverstein Properties but put on hold ; new plans as of June 2019 depict a shorter two-towered development
3101 Market Street ( Part of Schuylkill Yards ) Philadelphia 1,095 ft ( 334 m ) 70 2021-25 Proposed residential , office , education , and retail
300 Biscayne Miami 1,049 ft ( 320 m ) 94 2020 Announced in 2015 . It will be one of the tallest buildings in Miami and the state of Florida
One Bayfront Plaza Miami 1,049 ft ( 320 m ) 92 2020 Announced in 2010 . One Bayfront Plaza would be the tallest office tower in Miami and Florida
SkyRise Miami Miami 1,045 ft ( 319 m ) - 2020 A vertical entertainment center in Miami . Site work has begun as of October 2018
One Brickell City Centre Miami 1,040 ft ( 317 m ) 80 2020 Proposed in November 2013 and approved in 2014 with estimated completion in 2020
4/C Seattle 1,029 ft ( 314 m ) 99 - Proposed in September 2015 by Crescent Heights , designed by LMN Architects
247 Cherry New York 1,013 ft ( 309 m ) 78 2021 SHoP Architects building being developed by JDS Development Group . Initial plans revealed in April 2016 and approved by the City Planning Commission in December 2018
262 Fifth Avenue New York 1,001 ft ( 305 m ) 54 - First proposed in June 2016 ; as of June 2019 no site work has been completed and the developer has not released any updates
Figueroa Centre Los Angeles 975 ft ( 297 m ) 66 2020s Proposed residential , hotel , and retail - would become the third tallest building in Los Angeles