The Glion Tunnel is a two-gallery vehicular tunnel running underneath

Montreux Montreux (, , ; frp, Montrolx) is a Swiss municipality and town on the shoreline of Lake Geneva at the foot of the Alps. It belongs to the district of Riviera-Pays-d'Enhaut in the canton of Vaud in Switzerland, and has a population of approximat ...

Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...

. It carries

autoroute A9 The A9 autoroute (La ''Languedocienne''/''La Catalane'') is a motorway in southern France. The road forms part of the European route E15, as does the A9 road (Scotland). The road runs between Orange and Perthus, in the Pyrénées-Orientales ...

, which links the

Vaud Vaud ( ; french: (Canton de) Vaud, ; german: (Kanton) Waadt, or ), more formally the canton of Vaud, is one of the 26 cantons forming the Swiss Confederation. It is composed of ten districts and its capital city is Lausanne. Its coat of arms b ...

canton to the

Valais Valais ( , , ; frp, Valês; german: Wallis ), more formally the Canton of Valais,; german: Kanton Wallis; in other official Swiss languages outside Valais: it, (Canton) Vallese ; rm, (Chantun) Vallais. is one of the cantons of Switzerland, 26 ...

, and was placed in service in November 1970. The tunnel is long, wide and high. Between 1970 and 2000, traffic through the tunnel increased from 8,800 vehicles per day to 50,000, with 80,000 vehicles per day at times. During 2004-2005 the tunnels were renovated to bring them into conformity with the recommendations of the Tunnel Task Force, whose report was published in May 2000. The old tunnels were dark and did not conform to modern safety standards. Work was performed on one tunnel at a time, with traffic diverted through the other gallery. The construction resulted in major delays.

References

{{reflist Road tunnels in Switzerland Tunnels completed in 1970