The Cyclisk

Santa Rosa | California
Mark Grieve
Ilana Spector


The Cyclisk was designed by artists Mark Grieve and Ilana Spector in a competition using recycled materials. The design incorporates 340 discarded bicycles which were cleaned and welded together to form a four-inch-thick skin around a 65 foot traditionally shaped obelisk. ZFA coordinated with the artists in the early design stage, providing a structure for wind/earthquake forces as well as temporary lifting requirements. The Cyclisk was constructed using an efficient steel-trussed superstructure designed to be both light-weight and efficient, using readily available structural steel angles and reinforced connections. The $37,000 community art piece was commissioned by the City of Santa Rosa for Santa Rosa Nissan as a part of its “Art in Public Spaces” program. ZFA donated a significant portion of services to the project.

Awards: AIA Redwood Empire Design Award in 2010, Award of Merit in the Structural Engineering Association of California (SEAOC) Excellence in Engineering competition in 2011. It was also recognized as one of the 50 outstanding projects by the Public Art Network in 2010, at the Public Art Conference in San Diego in 2011, and appears in Ripley’s Believe it or Not.