 Breakthrough in the east tube between Sigirino and Vezia occurred on 30 March 2015.On 21 January 2016, breakthrough was achieved in the west bore between Sigirino and Vigana, while the breakthrough in the east bore between Sigirino and Vigana occurred on 26 January 2016.That same day, it was announced that the excavation process had been completed, and the installation of railway infrastructure was the next major stage of the work.