Livable neighborhoods for sustainable cities: Insights from Barcelona

The paper proposes a reflection on the superblock model - or supermanzana, in its well-known Spanish application - in the context of the debate on the 15-minute city and on the functional reorganization of mobility and public space to improve the quality of life, health and accessibility in urban areas. The impacts of car traffic on the livability of cities and neighborhoods, in terms of safety, air pollution, noise, but also in terms of consumption and quality of public space, are widely acknowledged. These issues are not new to the debate: since the first decades of the 20th century, with the advent and rapid diffusion of the automobile, concerns on the impacts of vehicular traffic and issues of urban livability and traffic separation have been raised by urban and transport planners. As a consequence, various models of neighborhood planning emerged, proposing solutions to limit these impacts. The supermanzana model takes up the principles of neighborhood planning by identifying a main road network and setting up a system of superblocks within the meshes of this network, in order to improve accessibility, equity, health and livability; it aims on the one hand to transform public spaces at the neighborhood level and on the other hand to reorganize the existing urban structure. The application of the supermanzana model in Barcelona offers an interesting contribution to the debate on the 15-minute city, showing how the principle of traffic separation can be applied to existing, dense urban contexts, reclaiming public space to more livable neighborhoods and sustainable cities. The analysis of the case study of Barcelona can contribute to research and policy, learning from this experience and especially from the critical issues that emerged.