Overcoming barriers to delivering active travel infrastructure: inter-agency collaboration in a state-led neighbourhood redevelopment

• Funding misalignment and governance complexities hinder active travel collaboration. • Strategic goals often lack clear delivery pathways, stalling implementation. • Informal knowledge exchange helps agencies overcome structural barriers. • Formalised mechanisms like joint planning improve inter-agency coordination. • Case study highlights tensions between strategic goals and delivery pathways. This research investigates the challenges to collaboration government agencies face in delivering active travel infrastructure as part of neighbourhood regeneration projects. Through a sociotechnical systems lens, we examine the influence of governance structures, decision-making processes, and institutional norms on inter-agency collaboration. Drawing on document analysis and key informant interviews, we identify opportunities and challenges faced by housing and transport agencies in coordinating the design and delivery of active travel infrastructure. Challenges include a disconnect between strategic objectives and funding mechanisms, bureaucratic inertia and complexity, and a reliance on informal networks within a complex regulatory structure. Despite these challenges, the research highlights the value of forums for knowledge exchange and relational approaches to collaboration, as well as the potential for pragmatic solutions such as collaborative working groups to overcome structural barriers within sociotechnical regimes. Achieving mode shift towards healthier and more sustainable forms of transport requires formalised effective mechanisms for integration of land use and transport planning. Our findings have implications for policymakers, practitioners, and stakeholders involved in shaping urban environments and promoting active mobility as a viable transportation option.