Completing 1km of BBT drive by TBM Wilma

Being commissioned on September 18 last year by ARGE H53 BBT, a consortium of Porr and Marti, TBM Wilma has completed the first kilometre of her 7.5km drive for the Brenner Base Tunnel (BBT).

Construction of the east and west tunnels respectively on the Pfons-Brenner section of the railway towards Innsbruck, is up to these two 10.37m-diameter Herrenknecht machines.

As the last of nine TBMs deployed on the Brenner Base Tunnel, they have successfully navigated the Schmirntal fault zone.

Meanwhile, TBM Flavia, which launched from the Lot H61 Mules 2-3 site in April 2019, has just 300m remaining of her 14.3km drive on the west main tunnel. Flavia is working under an overburden of 1,200m of rock.