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Building History

The Seattle firm of Willcox and Sayward designed the Arboretum's Aqueduct overpass. Both men attended the Beaux-Arts-influenced curriculum at the Massachusetts Institute of Technology (MIT) in the 1890s, and operated in a partnership for six years, from 1908-1914. Willcox left Seattle to become become an important Professor at the University of Oregon, School of Architecture and Design, in 1922. He was Head of the Department of Architecture for 21 years, from 1922-1943.

Building Notes

Two structures designed by W.R.B. Willcox, (1869-1947), were designated at the same time in 1975, the Washington Arboretum Sewer Trestle and the 8th Place West Retaining Walls in Queen Anne (1913).

Listed on inventory of Historic Bridges/Tunnels in Washington State TR. Listed on the National Register of Historic Places, level of significance: State. City of Seattle Landmarks Board: Date introduced/referred: 12/06/1976; Date passed: 12/13/1976; Status: Passed; Vote: 8-0; Date of Mayor's signature: 12/21/1976.