As of January 2022, 4 main construction lots are under construction: Mules 2-3, Isarco River Underpass (Italian project area); Sill gorge, Sill gorge - Pfons (Austrian project area).
In total, the BBT tunnel system will include about 230 km of tunnels, 149 km of which have already been excavated: 53 km main tunnels, 55 km are exploratory tunnels and 41 km are other types of tunnel works such as access tunnels or logistic tunnels.
H41 Sill Gorge-Pfons lot
Works in the Sill Gorge - Pfons construction lot were officially launched in mid-January 2022. This is one of the largest construction lots, for the Brenner Base Tunnel, stretching from the Sill gorge near Innsbruck via the Ahrental valley to Steinach am Brenner. The Lot includes the excavation of 24.8 km of tunnel: 22.5 km of main tunnel tubes and 38 cross passages with a total length of about 2.3 km. Lot H41 can be accessed from the existing Ahrental lateral access tunnel. The works are to last 80 months, until summer 2028.
This new lot is being carried out by a consortium which includes Implenia Österreich GmbH, Implenia Schweiz AG, Webuild S.p.A, and CSC Costruzioni SA the contract is worth 651 million Euro.
Tender procedure for the H53 Pfons-Brenner construction lot
The Pfons - Brenner construction lot (H53) has been tendered Europe-wide by the Brenner Basis tunnel BBT SE with a contract worth about 855 million Euro, excluding VAT. The contract will be awarded using the MEAT (most economically advantageous tender) criterion. In addition to the price, quality-base criteria are involved in the bid evaluation, too. The tender floating period will end on 16th May 2022 at 12pm.
If the tender procedure proceeds according to plan, the contract of the Pfons-Brenner construction lot will be awarded within 2022. The construction period of the tendered works is estimated at 69 months.
The newly tendered construction lot is situated between the townships of Pfons to the north and Gries am Brenner to the south. With Pfons-Brenner (H53) and Hochstegen (H52), two new and different construction lots have been designed. Both stretches were part of the former construction lot Pfons-Brenner (H51).
Besides the Sill Gorge construction lot (H41), Pfons Brenner (H53) is still one of the biggest stretches in the Austrian project area.
The tendered contract comprises the excavation of the two main tunnel tubes northwards up to the border to the H41 construction lot and southwards up to the state border at the Brenner Pass. The exploratory tunnel is being excavated up to the state border. A total of approx. 25.2 km of main tunnels are to be excavated, of which approximately 15.2 km will be using a TBM and approx. 10 km by blasting. In addition to this, 1.3 km of exploratory tunnel will also be excavated as well as cross-connecting passages, with a total length of approx. 2.3 km. Besides this, several works regarding the inner lining will be carried out as well. Click here, at/16 and it/103 for tunnelbuilder archive. Visit https://www.bbt-se.com/en. 04/22.
