Fourth and Madison Building

40-story skyscraper in downtown Seattle, Washington

47°36′20″N 122°19′59″W / 47.605498°N 122.333032°W / 47.605498; -122.333032Construction started2000Completed2002OwnerTIAA-CREFHeightRoof156.06 m (512.0 ft)Technical detailsFloor countAbove ground: 40
Below ground: 2Floor area845,000 sq ft (78,500 m²)Lifts/elevators22Design and constructionArchitect(s)Zimmer Gunsul Frasca Partnership
Kendall/HeatonDeveloperHines Interests Limited PartnershipStructural engineerMagnusson Klemencic AssociatesMain contractorPCL ConstructionWebsitefourthandmadison.comReferences^[1]^[2]^[3]^[4]

The Fourth and Madison Building (formerly the IDX Tower) is a 40-story skyscraper in downtown Seattle, Washington.^[5] The building is located at 925 Fourth Avenue, at the intersection with Madison Street. Upon its completion in 2002, the late-modernist highrise was Seattle's first building to exceed 500 ft (150 m) in over a decade.

In 2007, Fourth and Madison was awarded the BOMA International Office Building of the Year Award in the 500,000–1,000,000 sq ft (46,000–93,000 m²) category.^[6]

The rooftop garden on the seventh floor is a privately owned public open space (POPOS).^[7]

Construction of the foundation required shoring around the Great Northern Tunnel and Downtown Seattle Transit Tunnel. The tower also cantilevers 12 feet (3.7 m) over the Downtown YMCA.^[8]

References

^ "Fourth and Madison Building". CTBUH Skyscraper Center.
^ "Emporis building ID 100522". Emporis. Archived from the original on March 5, 2016.
^ "Fourth and Madison Building". SkyscraperPage.
^ Fourth and Madison Building at Structurae
^ "Hines Corp. press release". 2002-12-04. Archived from the original on 2007-09-28. Retrieved 2007-07-31.
^ "Press release: Fourteen North American Commercial Properties Win The Office Building of the Year (TOBY) and Earth Awards". BOMA. 2007-08-01. Archived from the original on 2010-12-22. Retrieved 2009-11-26.
^ "Privately Owned Public Open Spaces (POPOS)". Seattle City Council. Retrieved 2012-09-25.
^ Loesch, E. Douglas (October 3, 2002). "IDX Tower: Uncommon site poses steep challenges". Seattle Daily Journal of Commerce. Retrieved September 14, 2016.