Since its inception, Lentransproekt (since 1951 - Lengiprotrans) has been involved in the transport development of the Kazakh SSR. In the 1950s, the Kostanay (now Kostanay) - Tobol - Dzhetygara (now Zhitikara) railway line was designed. The road was supposed to provide transportation of iron ores from the recently discovered Sokolovo-Sarbaiskiy deposit to the Magnitogorsk Iron and Steel Works. The construction was carried out by order of the USSR Ministry of Building Materials Industry.
Railroad tracks were laid at an accelerated pace. So, in 1954, surveys were carried out on the Kostanay - Tobol section and construction began. In 1954-1955, survey work was also carried out at the Tobol - Dzhetygara section. In 1955, construction began, which was soon completed.
