After five years of construction, the tunnel was opened in October 1991.

The tunnel was opened for traffic on July 15th 2010.

On 1 May 1977 the tunnel was opened to traffic.

The tunnel was opened to traffic on 23 February 2008.

The tunnel was opened to traffic on 22 December 2000.

The tunnel was opened for work, but there were no workers.

The tunnel was finally opened to the public on 25 March 1843.

The tunnel and line were opened on 16 October 1871.

The tunnel was opened on 20 April 1789 after five years of construction.

A great deal of fighting broke out when the tunnel was opened to the public in 1996.