Sierre Tunnel

The Sierre Tunnel (Tunnel de Sierre) is a tunnel near Sierre in the Swiss canton of Valais. It is part of the A9 Autobahn and is located between Sierre and Sierre-Est-Ouest. The tunnel was opened in 1999 and consists of two tubes of 2,460 metres (8, 070 ft) in length. In a tunnel test by the European Tunnel Assessment Programme (EuroTAP) in 2005 it was rated as "good" – the second-highest grade out of five. The two tubes consist of four linked tunnels, namely, Alusuisse — 1,070 metres (3, 510 ft), Contoured — 620 metres (2, 030 ft), Crête Plane — 180 metres (590 ft), and Ancien Sierre Plant Composition — 580 metres (1, 900 ft). The Sierre Tunnel came to international attention in March 2012 after a coach crash inside resulted in the deaths of 28 people, including 22 children, who were returning to Belgium from a school skiing holiday.

Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).