Forecasting the durability of asphalt-and polymer concretes which is actual in the aspect of the eternal (or high durability) roads concept is executed in recent years on the basis of the testing results under cyclic loading on bending with constant amplitudes of stress or deformation. Such tests are rather complicated, expensive and ambiguous because of the difficulties with providing symmetrical loading with respect to the zero value stress. It is far easier to determine the asphalt concretes lifetime from the begining of loading till the total destruction of the sample by means of double-point loading via series of constant loads (the static fatigue while creeping). As a result a dependences similar to Woehler diagrams are received. Analysis of literature reveals that dependences of a number of cycles and times of destruction via stress for the same objects have close values of exponents (they are almost similar) in case of relatively congruous stressed states and temperatures. In this case the objectively equitable lifetimes of various asphalt-concretes can be achieved under the equal levels of stressed state which are defined by the ratio of the quantity of stress which is imposed on the asphalt concrete sample to the asphaltconcrete strength at the preset speed of deformation. The available lifetimes range from 10 seconds to many days. This allows to detect the lifetimes under near-critical stresses which correspond to the boundary of the transition to the linear viscoelastic behavior of asphalt concretes at a wide range of temperatures as well as under the simultaneous effect of stresses and liquid corrosive media (water, water solution of deicing agents, oil and lubricants etc.).