As a result of a large-scale armed attack on the sovereign territory of Ukraine and active hostilities, most of the military, civilian and infrastructure facilities have been significantly destroyed or damaged. In such circumstances, it is important to have methodological approaches to determining the amount of damage caused by hostilities and further economic assessment of the damage. The application of the methodological approaches presented in this article will allow documenting, calculating and substantiating the amount of damage and losses caused to roads as a result of armed aggression. This amount of damage and losses, calculated using the methods presented in this article, may serve as a basis for further forming the needs of the Reparations Fund from the aggressor party to the party affected by the hostilities. The methodological approaches proposed in this article can be used in determining the damage and losses caused to Ukraine as a result of the armed aggression of the Russian Federation, which is carried out taking into account other documents approved by the Cabinet of Ministers of Ukraine and central executive authorities of Ukraine. In this article, based on the study of modern practice, literature and scientific sources, the definitions of “damage” and “losses” are distinguished and clearly defined. An algorithm of actions of the balance holders of highways which were destroyed or damaged as a result of armed aggression is formed. For the purposes of this article, the author proposes to classify losses from destroyed or damaged highways into direct and indirect losses. The methodological approaches to determining the amount of damage caused as a result of hostilities and further economic assessment of the damage caused are formed with due regard for modern European management principles.