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17TH World Congress on Road Winter Service, Resilience and Decarbonisation - Pre-proceedings of the Congress

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Workshop 07 - Natural hazards risk for mountain road infrastructure

Thursday, March 12 09:30 - 11:00
Chair: François NICOT, USMB-ISTerre, France
Room: Room 6

[This session will be conducted in French only.]

The global climate change that we are experiencing has very strong consequences on the mountain environment. Precipitation patterns are modified, including significant fluctuations in the altitude limit separating precipitation into rain and snow. The decline in snowfall is therefore not synonymous with lower risks, quite the contrary. Episodes of heavy precipitation, which have become recurrent, are often correlated with gravity events combining different processes: rockslides, landslides, mudslides, etc.
This session proposes to shed an illustrative light on this new context, based on three presentations highlighting recent events, which have contributed to placing all stakeholders before a new paradigm: what new challenges and what avenues of response for infrastructure in mountain regions?

  1. Welcome and session introduction
  2. Presentations
  3. Questions and Answers
  4. Conclusion
  5. Organization

Welcome and session introduction

• François NICOT, USMB-ISTerre, France

Presentations

  • The Swiss topic - Various natural events recorded in the canton of Valais since 2023
    • Sylvain DUMOULIN (France) - Head of the Canton's Mobility Department
  • The landslide at La PRAZ
    • Anne LESCURIER (France) - Infrastructure Department - CD 73
  • The Ponserand landslide on the RN 90
    • Aurore BRACH (France) - Centre-East Roads Directorate (DIR Centre-Est) / SREI Chambéry

Questions and Answers

• Moderator: François NICOT, USMB-ISTerre, France

Conclusion

• François NICOT, USMB-ISterre, France

Organization

Session Organiser: François NICOT, USMB-ISterre, France
Session Secretary: [To be confirmed]