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The Mont Blanc Autoroutes and Tunnel company has unique experience in operating installations and tunnel infrastructures in mountainous terrain. ATMB teams have acquired expert skills in multiple domains notably winter service, civil engineering and information systems and technologies.

The Mont Blanc Tunnel: a site of worldwide importance

ATMB is the licensee of the Mont Blanc Tunnel until 2050, in partnership with its Italian counterpart SITMB. This exceptional 11.6 km long structure links France to Italy and passes under the highest mountain range in Europe. It has become a model in terms of security and infrastructure due to:

  • The permanent presence of expert and highly trained staff (more than 250, 70 of whom are firemen)
  • Highly advanced and innovative equipment worthy of the centralised technical management system to which are fed 100,000 control sensor readings to manage the equipment within the installation.
  • Continuous investment  in updating hardware so that it remains the most technologically advanced and innovative, worthy of the new centralised management system - especially Protéus, the firefighting vehicle specially designed for the firemen based in the tunnel 24 / 7.

As a worldwide reference in security management, the Mont Blanc tunnel attracts several thousand specialist visitors each year from all around the world.

11.6 kilometres of high-technology

Five tunnels supervised by ATMB along 130 km

ATMB has developed significant management experience with five tunnels across a network of 130km including the Mont Blanc Tunnel. Consequently, it has been successful in winning the tender for road management of the Montets tunnel.

This is a unique rail tunnel in France. Situated at an altitude of 1400 m, it is open to two-way traffic when the threat of avalanches compromises the usual roads. The tunnel requires supervision by ATMB personnel for up to 90 days per year. If the tunnel is opened to road traffic, an ATMB operator is mobilized to manage the two-way road and train traffic in collaboration with the Haute-Savoie Conseil Général and the French Rail Network. Equipment and infrastructure are checked all year round in order to ensure readiness when required.

A unique experience in managing significant transport installations in mountainous regions

ATMB is a unique repository of advanced expertise in managing installations in mountainous regions with a transport network situated in the heart of the highest mountain range in Europe. The Mont Blanc Tunnel Autoroute network includes 221 major engineering structures (tunnels, bridges and viaducts) spanning 130 km. The fact that the climatic conditions are particularly difficult with 100 days a year of below zero temperatures also requires specific expertise.

Winter service: highly skilled teams mobilized for 6 months per year

The 130 km ATMB network culminates at its highest point at 1274 m and is exposed to freezing temperatures (down to -20°C) for more than 100 days per year. 175 skilled professionals are mobilized for six months a year across five winter base stations. No less than 60 agents can be active in the field at any one time. The 221 bridges and viaducts freeze very quickly and are therefore closely monitored by ATMB teams.

Forward planning is key The ATMB network has 16 weather centres at its disposal. Each weather centre contains an alarm system which is set off if an anomaly such as ice risk is detected. ATMB also uses specific software developed by Météo France. The software analyses data from ATMB weather centres and models it, based on historical data from previous years, in order to supply 24 hour forecasts. ATMB also uses the 72-hour weather forecasts with radar and satellite image display.

For an autoroute management company ATMB has acquired unrivalled experience. The winter team includes five explosive experts to detect the need for and set off preventative avalanches on the approach roads to the Mont Blanc Tunnel.

175 active personnel across a 130 km road network.