5 September 1980 September 4, 2013 Author: Staff The St. Gotthard Tunnel opens in Switzerland. It is the world’s longest highway tunnel at 16.224 km. Famous Words of Inspiration..."Happiness depends more on the inward disposition of mind than on outward circumstances." Benjamin Franklin — Click here for more from Benjamin Franklin Related posts: 22 September 1980 5 May 1980 5 May 1980 14 August 1980 22 February 1980 27 June 1980 2 August 1980 26 September 1983 1 January 2007 27 September 2001 Categories: History Tags: 1980, 5 September