Schwanau, December 10, 2010. A busy section of the A1 highway in Italy between Bologna and Florence is currently being extended. This development also involves the 2.5km twin-bore Sparvo Tunnel which is part of a project awarded by the Italian client »Autostrade per l’Italia S.p.A.« to a joint-venture comprising »Vianini Lavori S.p.A.«, »Toto Costruzioni Generali S.p.A.« and »Profacta S.p.A.«. The Herrenknecht S-574 Earth Pressure Balance Shield will be used for mechanized tunnelling of this new large-diameter tunnel.
With an excavation diameter of 15.62 meters and an overall length of 130 meters, this record-breaking machine was assembled at the Herrenknecht headquarters in Schwanau (southern Germany) over a period of three months, where it has also been commissioned and tested extensively. To celebrate acceptance, the customer »Toto Costruzioni Generali S.p.A.« invited top-ranking representatives of all the companies involved in the project to Schwanau yesterday where the machine was presented and its functions explained.