The design of the new Porta Susa High-speed Railway Station for Turin considers the urban space as a public zone, where the grand station becomes a glass gallery acting as a passage, the site of a new urbanity. The station’s main volume measures 385 m in length (the length of a high-speed train) and 30 m in width and varies in height with respect to the external street level. The different modes of transport incorporated into the station include the high-speed and regional rail networks, metro systems, buses, tramways, car parks, and two vehicle roundabouts (in addition to zones for loading and unloading).
The complex is part of the long-range urban initiative of the City of Turin, which more specifically considers the station area of the city as the second of three “urban spines” to be targeted for new commercial, residential, and infrastructural improvements over the coming years. As a result, the station was conceived as part of a new commercial and residential zone proposing 100m tall tower that includes office space, condos, and hotel and public meeting amenities. The building’s main functions are divided amongst five underground floors, with the lowest consisting of metro platforms and the upper-most providing access to street level. The rail platforms are located in-between (level 3), and are serviced by commercial zones and waiting rooms at the intermediate level (level 2, or -1).
Ticket hall and main waiting area are on street level. Commercial area is both at the level below and at the upper one by two elevated “bridges” in order to make way for public amenities, part of a larger urban planning project taken on by the city that favors public space over hard urban separations.