Att systematiskt hantera kunskap vid planering av ny infrastruktur
En fallstudie om skyfallsskador på riksväg 90 i Kramfors kommun
Extreme rainNatural disasterRoadInfrastructureRisk analysisInvestigationSkyfallNaturolyckaVägInfrastrukturRiskanalysUtredning
Natural disasters are becoming more common due to climate change and it is important to adapt the society and its infrastructure to withstand events such as extreme rainfall. Precipitation is an important climatic factor affecting the transport and annually generates the cost of millions in damages, over the past 40 years heavy rain has increased and will continue to increase in the future. The extreme rainfall that occurred in Kramfors municipality in September 2013 led to flooding and destroyed several roads, including highway 90, which recently both had been rebuilt and given a new stretch of road. Extreme rainfall had also occurred in the municipality earlier. The aim of the thesis was to examine how the Swedish Transport Administration handles new knowledge gained after natural disasters and how this is used in the planning of new roads. From the aim of the study a case study was used as a method. Information was sought from reports, official documents and government investigations in order to see how the Swedish Transport Administration?s work looks like and to find studies about the incident on highway 90. There were also conducted interviews with informants within the Swedish Transport Administration to find out how the planning and investigation of roads looks like, and to get information about the work of national highway 90.Within the Swedish Transport Administration lessons are learned from natural disasters and events in the past, but learning is mainly individual - based and internally. There is no system in the Swedish Transport Administration to manage new information or collect past experiences. New knowledge and new conditions are used in the investigation and planning of roads, but depends on which people work with those. The planning of highway 90 follows the regulations and plans to be followed, but with additional information on past events and climate adaptation in those, the damages caused by the extreme rain on highway 90 could perhaps have been avoided.