Fourth and Madison Building

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.

Fourth and Madison Building
Location within downtown Seattle
Former namesIDX Tower
General information
TypeCommercial offices
Location925 Fourth Avenue
Seattle, Washington
Coordinates47.605498°N 122.333032°W / 47.605498; -122.333032
Construction started2000
Completed2002
OwnerTIAA-CREF
Height
Roof156.06 m (512.0 ft)
Technical details
Floor countAbove ground: 40
Below ground: 2
Floor area845,000 sq ft (78,500 m2)
Lifts/elevators22
Design and construction
ArchitectZimmer Gunsul Frasca Partnership
Kendall/Heaton
DeveloperHines Interests Limited Partnership
Structural engineerMagnusson Klemencic Associates
Main contractorPCL Construction
Website
fourthandmadison.com
References
[1][2][3][4]

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

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