Bridge “mainland – Sakhalin”: Problems of construction at the present stage

Purpose of the study. Due to the rapid escalation of the conflict between Russia and the West, as a result of which Russia is naturally moving closer to the East. In this regard, an urgent problem is to improve the transport accessibility of remote areas, such as Sakhalin, which is the largest island in Russia and has signif-icant natural resources. In this regard, Russian President Vladimir Putin supported the initiative to build a bridge connecting Sakhalin with the mainland, believing that this would help accele¬rate the development of the region. Materials and methods. In the course of the study, a retrospective of the large-scale investment railway project (KIP-railway) “mainland – Sakhalin” was given, and the main elements of the transport in-terchange were highlighted. The analysis showed that the lack of a direct bridge connection with the main-land significantly hinders the development of the economy of the “eastern vector”. Similar examples of successful development of regions with bridges, such as Crimea or Kamchatka, indicate that the construc-tion of a bridge between Sakhalin and the mainland can stimulate economic growth, improve the invest-ment climate and improve the quality of life of the local population. Results. The customer faces a difficult choice in terms of the coalition of elements of the transport interchange (hereinafter referred to as pro-jects) “mainland – Sakhalin”. To reduce uncertainty, a special software product ASPRER was used in this article. With the help of the program, expert rankings were obtained on an ordinal scale in numerical for-mat, in the form of coefficients of relative importance (COV). To combine projects into va¬rious coalitions using the Shapley method, sustainability and reliability of project implementation are achieved. The calculations performed demonstrate the work of a set of tools necessary for the customer to ensure transparency and validity of their own decisions. Conclusion. The tools offered to the customer also allow for the pre-investment stage of the KIP-railway assessment to structure the existing uncertainty and avoid cata-strophic errors at the pre-investment stage of project evaluation.