The Brenner Base Tunnel (BBT) connects the Austrian railway network in the Innsbruck area with the Italian in the Franzesfeste area over a length of 55 km through the Alpine main ridge. In Austria, its integration takes place once in Innsbruck-Wilten at the southern end of the main railway station, and on the other hand in two loops underground in the "Inntaltunnel" of the Innsbruck railway experience in the Aldrans area. Both connections also provide for the cross-free transfer from the German/Austrian legal system to the Italian left-wing system.

The system of the BBT consists of two single-track tunnels (radius 4.05 m) at a control distance of 70 m and a slope of 6 % Between these, a drainage tunnel (diameter 6.0 m) is located about 12 m below the water level. All 330 m are connected to the road tunnels by means of transverse strokes, which allow for the flight and evacuation of persons into the counter-tube. At a distance of about 20 km, emergency stops and track connections between the tubes are created. They are referred to as multi-function locations (MFS). In the MFS Innsbruck under the northern slope of the Patscherkofel the two connections from Innsbruck main station and the bypass Innsbruck open at the same time. The MFS Steinach in the St. Jodok area also has an overtaking facility. Both MFS are accessible via lateral access tunnels, the portals of which are located in the KG Vill west of the motorway. 500 m north of the Europabrücke (portal Ahrental) or In the district Wolf of the market town of Steinach, lie on the Brenner Pass. The branch of the railway bypass Innsbruck is also accessed through an access tunnel from the Ampasser Landesstraße (L283) near the motorway exit Ampass. Between its east portal in Tulfes and the branch to the BBT, the Inn tunnel is provided with an accompanying rescue tunnel, in order to achieve a tunnel safety level according to the state of the art.

The construction of the BBT takes place via the access tunnels Ampass, Ahrental, Wolf (North and South), the accompanying rescue tunnel from the portal front in Tulfes. The excavation material will be located in specially designed landfills in Ampass (North and South together 754 000 m³), west of the Brenner motorway, not far from the Ahrental access tunnel (2.7 million). m³), northwest of the parking lot Europabrücke (1.2 million) m³) and in the Padastertal (7.7 million) m³). Via the public transport network the material of the drainage tunnel in the section Sillschlucht-MFS Innsbruck and a part of the material from the drives of the integration into the bypass Innsbruck to the landfill not far from the access tunnel portal Ahrental or close to the European Bridge. This material is transported via the access tunnels, the drainage tunnels, conveyor belts and own construction roads to the landfills, with the arrival of the landfill Padaster being carried out via a specially constructed access tunnel.

The large construction sites in Tulfes, Ampass/Egerdach, Ahrental and Wolf will be connected directly to the motorway via their own construction roads. The Wolf construction site is connected to the Brenner motorway through the Saxen building road tunnel.

The construction of the integration in Innsbruck requires extensive conversions in the area of the exit tracks south of the main railway station with a number of track visas. This construction site is connected via its own Sillbrücke bridge with the driveway to the south ring. The propulsion of the tunnels for the integration of Innsbruck takes place from the south, so the material falls on the tunnel portal Ahrental.

The areas 75 m to the right and to the left of the tunnel axes of the tunnels, the traffic tunnels Ampass, Ahrental and Wolf, the accompanying rescue tunnel of the Innsbruck railway experience as well as the drainage tunnel (exploratory stollens) Ahrental and its Exit tunnels into the "Kraftwerk Untere Sill" balancing tank and the Sill in Innsbruck to the extent that all these tunnels or tunnels do not exceed 150 m over the gradients of the tunnel/tunnel.

The area of the open route guidance in Innsbruck as well as the portal areas and construction site facilities in Tulfes (Rettungstunnel bypass Innsbruck), access tunnel Ampass in Innsbruck KG. Amras, portal areas and construction site facilities in Innsbruck main station and entrance Sillschlucht in Innsbruck KG Wilten und KG Pradl, Portalbereich Zugangstunnel Ahrental in Innsbruck KG. Vill and in Patsch, portal area Wolf in Steinach am Brenner. In addition, the ground strip includes the Ampass Nord and Süd (KG. Ampass), Ahrental Süd (KG. Vill and Patsch), Europabrücke (KG. Schönberg) and Padastertal (KG. Steinach) and finally the construction roads in Ampass, Innsbruck Sillschlucht and Innsbruck Hauptbahnhof, Ahrental South, ventilation tunnel Patsch, Baustraßentunnel Padastertal and Baustraße Padastertal, construction roads Wolf-Plon with building road tunnels Saxen as well as the motorway access and departures within the meaning of Section 26 (2) of the Federal Road Act in Tulfes, Ampass, Ahrental and Plon.

Cadastral site plan with route map sheet 1 of 12, Plan Nr. 101 000-AU 000 000-TU-D0118-LP-03889-10;

Cadastral site plan with route map sheet 2 of 12, Plan Nr. 101 000-AU 000 000-TU-D0118-LP-03890-10;

Cadastral site plan with route map sheet 3 of 12, plan no. 101 000-AU 000 000-TU-D0118-LP-03910-10;

Cadastral site plan with route maps sheet 4 of 12, plan no. 101 000-AU 000 000-TU-D0118-LP-03911-10;

Cadastral site plan with route map sheet sheet 5 of 12, plan no. 101 000-AU 000 000-TU-D0118-LP-03400-10;

Cadastral site plan with route map sheet 6 of 12, plan no. 101 000-AU 000 000-TU-D0118-LP-04537-10;

Cadastral site plan with route maps sheet 7 of 12, plan no. 101 000-AU 000 000-TU-D0118-LP-03900-10;

Cadastral site plan with route map sheet 8 of 12, plan no. 101 000-AU 000 000-TU-D0118-LP-03401-10;

Cadastral site plan with route map sheet 9 of 12, plan no. 101 000-AU 000 000-TU-D0118-LP-03402-10;

Cadastral site plan with route map sheet 10 of 12, plan no. 101 000-AU 000 000-TU-D0118-LP-03932-10;

Cadastral site plan with route map sheet 11 of 12, plan no. 101 210-AU 000 000-TU-D0140-LP.00337-10;

Map Map with Trassenverlocating strip Sheet 12 of 12, Plan no. 101 210-AU 000 000-TU-D0140-LP-00335-10.