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• IP0339 - Making the RN90 safer in the Ponserand gorges
  David FAVRE , David FAVRE , Aurore BRACH , Natacha CHENOT
  Individual paper (pdf - 2.6MB)

  Route Nationale 90, which links Albertville to Moûtiers in Savoie (France) and serves the Trois Vallées and Haute-Tarentaise ski areas, was upgraded to 2x2 lanes before the 1992 Albertville Winter Olympics. In the Ponserand defile, between Aigueblanche and Moûtiers, the RN90 is exposed to a high rock risk from the cliffs upstream, at heights of up to 300 metres, with boulders of up to several hundred [...]