ALIZE-LCPC is the professional software for the mechanical analysis and design of pavement structures. First-line of ALIZE-LCPC is to integrate a rational method. It means that we do not calculate the structure a given service life but rather estimate the evolution over time in terms of cumulative probability of failure. This design method is used in France for many years and is widely spread in Africa, Spain or eastern European countries. As ALIZE-LCPC integrates a rich database of materials (rubber, treated, concrete…), it allows the analysis of a wide range of projects.