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Researches of influence of infrastructure on the economic growth and development of the countries gained currency. However the majority of authors drop the problem of definition of accurate concept of studied object and its criteria out. In the given article various approaches in the definition of «infrastructure» concept, criterion and the characteristics of infrastructure distinguishing it from other capital assets are presented. Such types of infrastructure, as personal, institutional, material, production, social, etc. are considered. Author’s definition of infrastructure is given.

Infrastructure is of high importance for human society, so the state pay great attention to it. Characteristics inherent to infrastructure, its development, maintenance and consumption don’t always explain only the state involvement in the sector.The article considers preconditions and basis of private sector involvement in the process of infrastructure supply, experience of different countries, public and private sectors relationships in the matter and private sector effectiveness in infrastructure supply.

Due to capital intensiveness of infrastructure projects, public budget defi cits, and lack of private funds available it’s highly important to evaluate the future capitalcosts and return of infrastructure projectsaccurately to increase provision of economy with infrastructure assets.The article considers typical errors inforecasting return of infrastructure projectsand capital expenditures to develop it, riskclassification and measures to mitigate it.