tunnel project, set to become the longest rail tunnel in the world.
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The project is funded by Austria and Italy with large contributions by the European Union. Together with the Inntal Tunnel, part of the existing Innsbruck bypass, the Brenner Base Tunnel will reach a length of 64 kilometres (40 mi), which would be the longest underground railway connection in the world.
The infrastructureEurotunnel Shuttles, Eurostar and freight trains runs on two monodirectional single-track tunnels. They are connected every 375 metres by cross-passages to a service tunnel, a road tunnel for the maintenance operations and eventually the evacuation of passengers.
The Laerdal Tunnel in western Norway is the longest road tunnel in the world. It takes about 20 minutes to pass through the tunnel. Brightly colored lights placed every six kilometers help drivers stay alert.