Urban utility tunnels as a long-term solution for the sustainable revitalization of historic centres: The case study of Pamplona-Spain

This paper exposes, through the case study of the city of Pamplona (Spain), the benefits of employ a system of urban utility tunnels (UUTs) for the smart and sustainable regeneration of historic centres. Governors and technicians of the city of Pamplona faced the challenge and responsibility to protect the historical and cultural heritage of the city and, in turn, to of adapt it to the needs of an ever changing society taking into account the new social and functional needs. This situation motivated the election of a system of UUTs as an optimal solution thinking about the future because it facilitates the maintenance, renewal or expansion of utility networks, while reduces inconvenience to residents and visitors by minimizing works in public space and visual pollution caused by aerial and fixed on facades wiring. This action allows the inhabitants of the historic city centre to have the same opportunities as citizens of new urban developments to enjoy the same quality, or more, of urban basic services and infrastructures. Likewise, in this paper will be presented the main difficulties encountered for the development of the project and the constructive solution finally executed.