Freight traffic through the Alps is growing significantly. Road transport, which is better adapted to the new requirements of production and distribution system, resulted in increased pollution, congestion, and safety concerns. The advent of the concept of sustainable development has called current modal split into questions. In this context, the objective of this research is to develop a tool, which would contribute to assess environmental, social and economic impacts of freight traffic along a corridor. Looking for equity not only between generations but also inside the same generation, environmental, social and economic sensitivities of crossed areas will be taken into account.