Brenner Base Tunnel, Lot Mules 2-3

“The longest underground railway connection in the world”

BBT is an extremely complex tunnel system. Besides the two main tubes (each 8,1m wide, running 70m apart from another) and the exploratory tunnel (5,0m wide), there are many connecting branches, side elements and emergency stops plus four lateral access tunnels.
BBT main tubes run for about 64km between Innsbruck and Fortezza, making it the longest underground railway stretch in the world. The two tunnels are linked every 333m by cross passages, reaching an apex height of 790m above sea level, 580m below the Brenner Pass itself (1371m).

This exceptional infrastructure represents a true engineering challenge because of its intrinsic geometrical complexity and because of the extreme variability of encountered rock masses.

In this stimulating context, SWS was required to provide a wide range of engineering services demanding a high level of technical and professional skills. Just to mention a few: developed and detailed design of civil works, TBM selection, General Contractor assistance in tender phase and during construction, BIM modelling, MEP design and implementation of value engineering optimisation measures.

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