Zurich: Milchbuck-Tunnel with
Safety Tunnel

The Milchbuck Tunnel (1985) is one of the most important traffic arteries within the bounds of the city of Zurich. It is numbered among the most frequently used single-bore tunnels in Switzerland. Since 2003 this 1.9 km long tunnel with up to 40 m overburden between the Zurich-Letten and Zurich-Unterstrass hubs has been upgraded in terms of the latest safety technology. So far the energy supply has been renewed as well as the lighting, tunnel ventilation and traffic guidance system. Furthermore it has been equipped with smoke detectors and video monitoring – now a 1,340 m long accessible...

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