"These days the modernist credo 'form follows function' is a debased cliche, yet in the 1950s it promised an efficient beauty that endures in the most surprising places - like this nine-story spiral of concrete one block from Union Square. The ramp for traffic circulation is treated as a sculptural object, a compact swirl of angled gray lines that makes no effort to conceal why it's there." (John King, San Francisco Chronicle, 28 June 2009.)

"The double spiral ramp seems common in garages now, but it was a big deal at the time - so much so that it landed on the cover of Architect & Engineer magazine....The structure has since been copied over years in other cities." (Alex Bevk and Brock Keeling, Curbed San Francisco, 1 March 2018.)