• - Length: 57,104 m (east tunnel) and 57,017 m (west tunnel)[1]​.

• - Total length of tunnels and galleries: 151.84 km.

• - Diameter of each of the single-track tubes: 8.83-9.58 m.

• - Distance between transverse passage tunnels: ca. 325 m.

• - Maximum depth: 2,450 m (in Piz Vatgira).

• - Start of construction: 1993 (surveys), 1996 (preparation) and 2003 (excavation).

• - Completion of the work (forecast for 2007): 2010 (excavation) and 2016 (inauguration).

• - Total cost: US$ 10.3 billion[7]​ (projected). Real cost of more than US$ 12 billion.[4]​.

• - Daily trains (project): 180–260 freight trains, 50 (65 by 2020) passenger trains[8]​.

• - maximum speed: 100 km/h for cargo, 250 km/h for passengers.

• - Volume of excavated rock: 24 million t (13.3 million m³).

• - Number of tunnel boring machines (TBM): 4.

• - Length: [1]​

• Western Tunnel: 57,017 km (35,429 mi)

• Eastern Tunnel: 57,104 km (35,483 mi).

• - Total length of all tunnels and shafts: 151.84 km (94.35 mi).

• - Diameter of each single track tube: 8.83–9.58 m (29.0–31.4 ft).

• - Distance between transverse passage tunnels: ca. 325 m (1,066.3 ft; 355.4 yd).

• - Maximum depth: 2,450 m (8,038.1 ft; 2,679.4 yd) (in Piz Vatgira).

• - Start of construction: 1993 (probing drilling), 1996 (preparations), 2003 (mechanical excavation).

• - End of construction: 2016.

• - Startup: May 2016.

• - Total cost: CHF 9,740,000,000[10]​ (US$10.1 billion until 2010).

• - Trains per day: 220-260[11]​.

• - Electrification system: 15 kV, 16.7 Hz.

• - Safety rules: The safety requirements of the rolling stock will be similar to other long Swiss tunnels, such as the possibility of overriding the emergency brake "Emergency brake (train)"). This contrasts with the English Tunnel which has safety regulations requiring custom-made trains.

• - Mass of the excavated rock: 28,200,000 Tm, (31,100,000 short tons; 27,800,000 long tons)[12]​ 13,300,000, the equivalent of 5 pyramids of Giza).

• - Number of tunnel boring machines (TBM): Four Herrenknecht gripping tunnel boring machines - machine numbers S-210 and S-211 operated in a northerly direction from Bodio to Faido and Sedrun and were nicknamed ' 'Sissi' 'and ' 'Heidi' ', respectively; Engines S-229 and S-230 operated southbound from Erstfeld to Sedrun and were known as Gabi I and Gabi II.

• Total length: 440 m (1,443.6 ft; 481.2 yd) (including reserve equipment).

• Total weight: 3,000 tons.

• Power: 5 MW.

• Max. daily excavation: 25–30 m (82–98 ft)(in excellent rock conditions).

• Total excavation length using TBM: about 45 km (28.0 mi; 28.0 mi) (for each tube).

• Manufacturer: Herrenknecht"), Schwanau"), Germany.

• - Annex:Large tunnels.

• - AlpTransit.

• - Base tunnel.

• - Zimmerberg base tunnel.

• - Monte Ceneri base tunnel.

• - Lötschberg base tunnel.

• - SBB-CFF-FFS.

• - Gotthard road tunnel.

• - Saint Gotthard railway tunnel.

• - Brenner Base Tunnel.

• - Wikimedia Commons hosts a multimedia gallery on St. Gotthard Base Tunnel.

• - Status of work.

• - Alptransit Gotthard AG - Official project site Archived November 7, 2011 at the Wayback Machine. (in English).

• - PDF file made by Alptransit Gotthard AG with the full description of the project (in English).

• - Atlas Copco - The longest tunnel in the world (in English).

• - PDF file of the "Porta Alpina" station project (in German).

The company in charge of the construction was AlpTransit Gotthard, under the direction of engineer Leonardo Rondi"), which to reduce the planned time by half, began the works from four different points (finally there were five) at the same time, located in Erstfeld, Amsteg, Sedrun, Faido and Bodio.

A tunnel system has been built with two main single-track tubes, connected approximately every 325 m by service tunnels. Trains can change tunnels at one of the two "multifunctional stations" under Sedrun") and Faido, which house ventilation equipment and technical infrastructure and serve as emergency stops and evacuation routes in case of emergencies.

In the excavation process, nine workers died.[4]​.

In 2006, it was planned to use the vertical shaft of Sedrun (canton of Graubünden) as access to an underground station, in the middle of the tunnel, 800 m deep, with an elevator allowing quick access to that region of the canton, but the project, which had been baptized as Porta Alpina"), was abandoned in 2007 due to technical and financial problems and the lack of support from the Confederation.[6] However, the nearby galleries have been drilled. to the Sedrum multifunctional station foreseeing its use in the future.

• - Length: 57,104 m (east tunnel) and 57,017 m (west tunnel)[1]​.

• - Total length of tunnels and galleries: 151.84 km.

• - Diameter of each of the single-track tubes: 8.83-9.58 m.

• - Distance between transverse passage tunnels: ca. 325 m.

• - Maximum depth: 2,450 m (in Piz Vatgira).

• - Start of construction: 1993 (surveys), 1996 (preparation) and 2003 (excavation).

• - Completion of the work (forecast for 2007): 2010 (excavation) and 2016 (inauguration).

• - Total cost: US$ 10.3 billion[7]​ (projected). Real cost of more than US$ 12 billion.[4]​.

• - Daily trains (project): 180–260 freight trains, 50 (65 by 2020) passenger trains[8]​.

• - maximum speed: 100 km/h for cargo, 250 km/h for passengers.

• - Volume of excavated rock: 24 million t (13.3 million m³).

• - Number of tunnel boring machines (TBM): 4.

• - Length: [1]​

• Western Tunnel: 57,017 km (35,429 mi)

• Eastern Tunnel: 57,104 km (35,483 mi).

• - Total length of all tunnels and shafts: 151.84 km (94.35 mi).

• - Diameter of each single track tube: 8.83–9.58 m (29.0–31.4 ft).

• - Distance between transverse passage tunnels: ca. 325 m (1,066.3 ft; 355.4 yd).

• - Maximum depth: 2,450 m (8,038.1 ft; 2,679.4 yd) (in Piz Vatgira).

• - Start of construction: 1993 (probing drilling), 1996 (preparations), 2003 (mechanical excavation).

• - End of construction: 2016.

• - Startup: May 2016.

• - Total cost: CHF 9,740,000,000[10]​ (US$10.1 billion until 2010).

• - Trains per day: 220-260[11]​.

• - Electrification system: 15 kV, 16.7 Hz.

• - Safety rules: The safety requirements of the rolling stock will be similar to other long Swiss tunnels, such as the possibility of overriding the emergency brake "Emergency brake (train)"). This contrasts with the English Tunnel which has safety regulations requiring custom-made trains.

• - Mass of the excavated rock: 28,200,000 Tm, (31,100,000 short tons; 27,800,000 long tons)[12]​ 13,300,000, the equivalent of 5 pyramids of Giza).

• - Number of tunnel boring machines (TBM): Four Herrenknecht gripping tunnel boring machines - machine numbers S-210 and S-211 operated in a northerly direction from Bodio to Faido and Sedrun and were nicknamed ' 'Sissi' 'and ' 'Heidi' ', respectively; Engines S-229 and S-230 operated southbound from Erstfeld to Sedrun and were known as Gabi I and Gabi II.

• Total length: 440 m (1,443.6 ft; 481.2 yd) (including reserve equipment).

• Total weight: 3,000 tons.

• Power: 5 MW.

• Max. daily excavation: 25–30 m (82–98 ft)(in excellent rock conditions).

• Total excavation length using TBM: about 45 km (28.0 mi; 28.0 mi) (for each tube).

• Manufacturer: Herrenknecht"), Schwanau"), Germany.

• - Annex:Large tunnels.

• - AlpTransit.

• - Base tunnel.

• - Zimmerberg base tunnel.

• - Monte Ceneri base tunnel.

• - Lötschberg base tunnel.

• - SBB-CFF-FFS.

• - Gotthard road tunnel.

• - Saint Gotthard railway tunnel.

• - Brenner Base Tunnel.

• - Wikimedia Commons hosts a multimedia gallery on St. Gotthard Base Tunnel.

• - Status of work.

• - Alptransit Gotthard AG - Official project site Archived November 7, 2011 at the Wayback Machine. (in English).

• - PDF file made by Alptransit Gotthard AG with the full description of the project (in English).

• - Atlas Copco - The longest tunnel in the world (in English).

• - PDF file of the "Porta Alpina" station project (in German).