Scaling Infrastructure presents the proceedings of the second and final conference of MIT’s Center for Advanced Urbanism biennial theme of infrastructure. The conference brought together political leaders, engineers, designers, and academics to investigate how critical the issues of appropriate infrastructural investments and scales have become to the future of urbanized territories when faced with new economic, political, and environmental challenges. This companion volume to Infrastructural Monument explores the phenomenon of growing and shrinking cites in response to population shifts. How do we deal with cities like Detroit, whose once thriving population and economy have been drastically reduced, leaving a city built for a large capacity to adjust to this decline? Or how do cities grow quickly in response to greater demands for housing and transportation?