In the post-war years Lentransproekt (since 1951 - Lengiprotrans) worked on the project of the Chum - Salekhard - Igarka Transpolar Mainline. The road was designed in special secrecy with the strategic goal of defending the Arctic coast of the USSR. In 1953, work was suspended with the death of I.V. Stalin, who supervised the construction.
In the 1970s, the design and construction of individual sections of the Transpolar Mainline was resumed. First of all, Lengiprotrans engineers carried out surveys and developed a project for the Nadym - Pangody - Yagelnaya railway line in the Yamalo-Nenets Autonomous Okrug. The construction of this section was necessary to organize the delivery of equipment to the gas and oil fields in the northern part of the Nadym-Pur-Taz region. In the opposite direction, it was planned to export the products of the Urengoy gas processing plant.
Surveys on the Nadym - Pangody section were started in 1971, and in 1973 - on the Pangody - Yagelnaya section. 44 bridges were designed along the entire line.
The project used the methodology for designing the subgrade on permafrost soils, developed by the specialist of Lengiprotrans A.P. Kudryavtsev. This technique provides for the preservation of permafrost for the period of both the construction and operation of the line. This is achieved by covering the frozen base of the subgrade in embankments with berms, the height of which is determined by heat engineering calculations. In the summer period, the bulk soils are warmed up and thawed. This process does not reach the depth of the permafrost base, and frosts have already begun in September.
The Nadym - Pangody - Yagelnaya railway line was an “island” road that did not have access to the country's general railway network. Cargoes were delivered along the Nadym river to the Nadym-Pristan station and were reloaded onto the railroad.
As a result of the development of the region in 1975, the settlement of Novy Yarengoy was officially registered at the Yagelnaya station. Subsequently, it became a major production center of the Urengoyskoye field and the unofficial gas capital of Russia.
In 1983, the completion of the line began to meet the standards of the general road network of the Ministry of Railways. However, in 1988 the work was suspended due to lack of funding. Currently, it is planned to build the Northern latitudinal railway on the sections of the Transpolar Mainline.
