The City Tunnel called "Citytunneln" in Swedish is a 17 kilometre rail link between the current terminal station Malmö Central and the Oresund Bridge in southern Sweden. The tunnel which length is about 6 kilometres is currently under construction.  The new railway will run underground trough the city centre. In April 2008 the tunnel boring machine TBM completed the excavation activity. It's projected to open the tunnel in December 2010. The project has two main goals: 1.    To reduce travel times between Malmö with a population in the urban area of 281’000 and the Danish capital Copenhagen with a population in the urban area of more than 1.2 million inhabitants. 2.    To increase the capacity on the Scanian network by changing Malmö Central station from a terminus to a transit station. The work is projected to cost SEK 9.45 billion, about $US 1.2 billion. The two tubes where excavated by two different TBM (Tunnel Boring Machine), Anna and Katrin.   Geology Video Film on how the City Tunnel TBM functions in Swedish language. [youtube]http://www.youtube.com/watch?v=Uo1HefpB_J0[/youtube]

From more than 150 km of tunnels, galleries and passages that have to be excavated at the Gotthard Base Tunnel, Switzerland, 111.5 km had been excavated. This means more than 70% of the tunneling work is done.