Région Réunion NRL - Europe - FEDER

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Rockfalls and road accidents

2 juin 2016

Since the important safety works (nets and gabions) were carried out between 2006 and 2008, the average number of rock-falls reaching the road has been reduced from 110 per year to less than 50 per year since 2007. The estimated weight of rocks falling onto the road has greatly decreased, but remains very variable.

Rockfalls (in tonnes) :

However, rock-falls involving a whole section of the cliff can still take place, as was the case on :

  • 22nd June 1980 at PK2 (kilometric point 2) : 3 persons died - between 15,000 and 20,000 m³ of rocks
  • 16th of April 1988 at PK5 : no casualties
  • 24th of March 2006 PK12 : two persons died - between 20,000 and 30,000 m³ of rocks.

Road accidents due to rock falls :

Between the opening of the four-lane coast road in 1976 and up to 2012, the total number of persons killed was 123, 23 as a result of rock falls. The number of injured persons sent to hospital was 287 : 22 as a result of rock-falls. The number of injured persons not sent to hospital was 451 : 40 linked to rock falls.