Interdisciplinary graduate education is key to the preparation of tomorrow's engineers, researchers and faculty. The U.S. National Science Foundation's Integrative Graduate Education Research Traineeships (IGERTs) provide funding to train students in interdisciplinary science and engineering. These five-year federal grants fund student traineeships, travel, and some supplies, but not equipment, space, or faculty lines. According to the 2008 RFP, "The program is intended to catalyze a cultural

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... ange in graduate education, for students, faculty, and institutions, by establishing innovative new models for graduate education and training in a fertile environment for collaborative research that transcends traditional disciplinary boundaries." Therefore, if interdisciplinary graduate education innovations are to be institutionalized, additional provisions must be made by the university faculty and administration. To better understand the strategies employed to institutionalize changes initiated through a limited source of funding, we conducted a qualitative analysis of the successful proposals of 134 IGERT grants. Each proposal was selectively coded for plans to institutionalize the interdisciplinary program. The most commonly cited strategies included new certificate or degree programs, commitment of space and/or faculty lines, and cost-sharing with existing departments or research centers. Several proposals did not address sustaining the program beyond the initial funding period. These findings support an argument for a more inclusive approach on the part of universities and faculties to supporting interdisciplinary programs such as IGERT, built on the realization that a comprehensive approach to sustainability is necessary in order for interdisciplinary change to become permanent at an institution. This broad survey of institutionalization plans complements an ongoing in-depth study of the impact of IGERT on interdisciplinary activities at a few specific institutions.