| Fourth and Madison Building | |
|---|---|
 | |
  Location within downtown Seattle | |
| Former names | IDX Tower |
| General information | |
| Type | Commercial offices |
| Location | 925 Fourth Avenue Seattle, Washington |
| Coordinates | 47°36′20″N 122°19′59″W / 47.605498°N 122.333032°W |
| Construction started | 2000 |
| Completed | 2002 |
| Owner | TIAA-CREF |
| Height | |
| Roof | 156.06 m (512.0 ft) |
| Technical details | |
| Floor count | Above ground: 40 Below ground: 2 |
| Floor area | 845,000 sq ft (78,500 m2) |
| Lifts/elevators | 22 |
| Design and construction | |
| Architect(s) | Zimmer Gunsul Frasca Partnership Kendall/Heaton |
| Developer | Hines Interests Limited Partnership |
| Structural engineer | Magnusson Klemencic Associates |
| Main contractor | PCL Construction |
| Website | |
| fourthandmadison | |
| References | |
| [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]