The methods of optimum design of road longitudinal profile for various purposes, allowing eliminating subjective decisions, are developed and implemented by various research establishments. These methods are based on a deep theoretical background; they are automated but characterized by certain serious drawbacks. Firstly, the use of the minimum amount of excavation works as a criterion of optimality cannot provide an optimum solution regarding a definite period, because traffic intensity and its annual increase are not taken into account. Secondly, the proposed methods do not stipulate the necessity of stepwise development of road geometrical elements and their comprehensive substantiation. Finally, the optimization programs of design lines of the longitudinal profile are complicated and cannot be always applied in small design bureaus. This work, being based on the presented features of analyzed publications and the necessity of their further development, is aimed at the development of methods and recommendations for a feasibility study of main parameters of transversal and longitudinal profiles of wood transportation roads including prediction of optimum terms of construction and retrofitting sequence. Achievement of the formulated purpose is mainly determined by mutual links and the structure of elements considered in this work. For clear determination of subordination of these elements, their influence on techno-economic calculations, and systematization of the overall process, it is necessary to develop a logical model of the problem. Another step to achieve the goal is a mathematical description of links of the logical scheme, that is, the development of the mathematical model of the solution. Since the solution assumes searching for optimum parameters, the mathematical model should be based on the target function with its extremum corresponding to the required optimum combination of the optimized elements. Several variants and the search area are defined by the required limitations.