As cities evolve, navigating the complex interplay between social and technical elements is crucial for achieving sustainable urban development. This paper uses a case-study approach and applies actor-network theory (ANT) to understand the sociotechnical complexities of urban transformation, with a specific focus on transport projects at the municipal level. ANT serves as a qualitative analytical framework to investigate the successful restoration of Catharijnesingel in Utrecht. Interviews with ten field experts have provided valuable insights into the transformation process, revealing the underlying paradigms at play. Specifically, this study used Michel Callon’s (1984) concept of translation to analyze how agency is enacted in decision-making processes. By focusing this research on actornetworks related to the theme of sustainable transport, the study has identified five transformation mechanisms involved in removing the 20th-century city highway and restoring the original canal, offering valuable lessons for similar projects in various contexts. This study contributes to the existing ANT literature by presenting a robust framework for analyzing actor-networks in transport infrastructure transformation projects, thereby opening new avenues for future research and practical applications in urban planning.