Walkability is a concept that has gained considerable popularity in order to promote safe, sustainable and healthy urban environments. The human scale is placed at the center of urban problems, of social living, closely relating to the objectives of sustainable mobility. In the scientific debate, some shortcomings still emerge in pedestrian accessibility measures due to a lack of open data of a pedestrian path that make it difficult to provide computational-scientific support in the analysis, processing and experimentation of cognitive frameworks and that limit also the scale of representation and measurement of the urban context. The research work aims to define and build a database not present in the scientific framework and sources such as OpenStreetMap on the characteristics related to the geometry, safety and urban context of a pedestrian path applied to the case study of the city of Sydney. The study, in turn, is related to the support tool Pedestrian in the city which analyses the urban pedestrian rhythms in order to define the measure of man in the main urban areas of the city. The construction of the walkability database combined with the pedestrian urban rhythms aim within the experimentation to provide thematic maps on the network characteristics in relation to the offer of urban services and to provide useful support to local decision makers for further applications in different urban contexts. The georeferencing of linear characteristics simultaneously serves as an implementation element of the platform, considering the city from a neighborhood scale to an urban scale.