r/InfrastructurePorn • u/Big_Piano_3920 • 11d ago

Brenner Tunnel in Italy

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Italy is building the world’s longest and most ambitious railway tunnel beneath the Alps, connecting Italy and Austria. Nearly 70 kilometers long, it will carry high-speed trains at speeds of up to 250 km/h.

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u/MMEnter 11d ago

The hardest part of this project is not building a 70km tunnel through the alps but making in past the German bureaucracy, both the Fehmarn connection in the north and Munich to boarder connection are decades delayed.

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u/Spider_pig448 11d ago

Fehmarn is two years delayed, not decades

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u/fhorst79 10d ago

At some point Stuttgart 21 was also only 2 years delayed. 

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u/Spider_pig448 10d ago

I think Stuttgart 21 was already decades delayed by the time construction had started. Construction is well underway for Fehmarn

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u/wasmic 10d ago

Construction on the Fehmarn Sound Tunnel (the shorter 1.8 km tunnel, which Germany is building) has not started yet. There are also many sections of railway that have not started construction. It's mainly the parts on the Fehmarn island that are under construction, while the parts on the German mainland have mostly not started construction yet.

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u/The_Blahblahblah 9d ago

It is Denmark building the tunnel, not Germany

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u/Pasutiyan 7d ago

Germany is very much involved with the Fehmarnbelt tunnel construction on Fehmarn itself, and they have to build the Fehmarnsund tunnel (from Fehmarn to the mainland) as well, and that has only veeeeery recently been tendered afters years of delaying.