The town currently has a large number of rail and road work sites. Although this activity has increased as a result of the 2006 Winter Olympics, parts of it had long been planned. Some of the work sites deal with general roadworks to improve traffic flow, such as underpasses and flyovers, but two projects are of major importance and will change the shape of the town radically.
One is the Spina ("spine") which includes the doubling of a major railroad crossing the town. The railroad previously ran in a trench, which will now be covered by a major boulevard. The Porta Susa on this section will become Turin's main station.
The other major project is the construction of a subway line based on the VAL system, known as Metrotorino. This project is expected to continue for years and to cover a larger part of the city, but its first phase was finished in time for the 2006 Olympic Games (inaugurated on 4 February 2006 and opened to the public the day after). The first leg of the subway system linked the nearby town of Collegno with Porta Susa railway station in Turin's town centre; on 4 October 2007 the line was extended to Porta Nuova railway station. This underground transportation project has historical importance for Turin, as the town has dreamed of an underground line for decades, the first project dating as far back as the twenties. In fact, the main street in the town centre (Via Roma) runs atop a tunnel built during the fascist era (when Via Roma was built). The tunnel was supposed to host the underground line but is now used as an underground car park. A project to build an underground system was ready in the seventies, with government funding for it and for similar projects in Milan and Rome; whilst the other two cities went ahead with the projects, Turin local government led by mayor Diego Novelli shelved the proposal as it believed it to be too costly and unnecessary, but that only meant more funding for Rome and Milan.
The city has an international airport known as Caselle International Airport Sandro Pertini (TRN), located north of the city about 13 kilometres from downtown and connected to the city by a railway service (from Dora Station) and a bus service (from Porta Nuova and Porta Susa railway stations).