Examining the Dynamics Between Formal and Informal Institutions in Progressive City Planning

What explains the institutionalization of progressive city planning practices? Using Medellín as a case study, I analyze how state and nonstate actors target both formal and informal institutions in efforts to maintain the continuity of progressive public space provision practices. I introduce the idea of institutional compounding, defined as the quest by networks of individuals and organizations to create and sustain both formal and informal institutions, where each maintains its particular defining features while together they provide continuity and legitimacy to an existing practice. I draw on in-depth, semi-structured interviews, direct observation, and document analysis to demonstrate that continuity efforts are more likely to have an effect when actors engage in institutional compounding, since the strategy minimizes the shortcomings of formal and informal institutions alone. The findings contribute toward conceptualizing how nascent institutions become effective, highlighting how actors strengthen practices and how they seek to embed them through networked efforts.