ABSTRACT
ABSTRACT: In the Norwegian Public Roads Administrations (NPRA) R&D program “Climate and Transportation” the main goal is to improve planning, design, operation and maintenance of the road network in Norway in order to adapt to future climate changes. This implies to come up with recommendations and to develop revised guidelines to cope with a changed climate based on the Intergovernmental Panel on Climate Change (IPCC) reports and Norwegian climate research (RegClim). One of the tasks is to investigate the effect of a changed climate on gravel roads, which is described in this paper. This task will be dealing with analyses of pavement condition, estimation of changes in maintenance costs and proposal for actions to cope with negative consequences of a changed climate. There are limited data available on gravel roads in Norway; hence, a survey in all the NPRA regions was carried out. Pavement and drainage condition data, current maintenance methods, maintenance costs, and intervals where collected and analyzed. The results were used together with the estimated change in climate to do some preliminary estimation for rehabilitation and maintenance needs and the corresponding maintenance costs.
