History
In response to the automobile boom in Switzerland and the popularity of Italy as a travel resort, the Swiss government gave approval in July 1969 for the construction of the 16-kilometre Gotthard Road tunnel. The tunnel would be longer than any existing road tunnel, and would provide year-round road link between central Switzerland and Milan to be used in place of the Gotthard Pass.
The now widely used motorway tunnel was opened on September 5, 1980. It remains a single bore tunnel with just one lane operating in each direction. It has four large ventilation shafts and an additional side gallery between 10 and 18 metres from the main tunnel, having its own independent ventilation system in order to facilitate the cutting of a second tunnel, should future traffic levels require it.
On Friday, October 24, 2001, a collision of two trucks created a fire in the tunnel, killing eleven and injuring many more, the smoke and gases produced by the fires being the main cause of death. The effects of even small fires in a confined space like a tunnel are extremely serious because of the inability of gases and heat to disperse. For instance, carbon monoxide is highly toxic at very low concentrations; having this trapped in a confined space allows concentrations to build well beyond a fatal level. The tunnel was closed for two months after the accident for repair and cleaning.
Read more about this topic: Gotthard Road Tunnel
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