He has contributed work to numerous exhibitions and events and is known for his international "Streetworks" project that plants public art in unusual urban locales.
[7] In the early 1990s Sullivan began creating "Streetworks", unique conceptual art pieces built from materials he picked up from gutters and sidewalks.
Under the guise of semi-anonymity,[6] he constructs the pieces on specific sites such as subway stations, abandoned buildings, parks, bridges, and other locations.
In March 2010 Sullivan contributed art pieces to the international traveling exhibit Global Perspectives: Works on Paper.
[1] In 1988, Sullivan joined the faculty at the University of New South Wales in Kensington, Australia, where he remained for over ten years.
[5] Made while at the University of New South Wales, it was intended to accompany an exhibition called Critical Influence at the Ivan Dougherty Gallery in February and March 1998.
[14] He presented "Art Practice as Research: New Roles for New Realities" at Moravian College in Bethlehem, Pennsylvania on 11 November 2009.
[6] Effective 1 August 2010,[1] Sullivan was appointed director of Pennsylvania State University's School of Visual Arts.
[16] Sullivan is the author of Seeing Australia: Views of Artists and Artwriters,[5] a paperback book released on Piper Press in 1994.