In December 1939, in connection with the outbreak of the Soviet-Finnish war, the Government of the USSR issued a task for the accelerated construction of the Petrozavodsk-Suoyarvi railway to transport equipment and food to the front line.
After receiving the order, within one day, 7 complex parties, consisting of employees of Lentransproekt (since 1951 - Lengiprotrans), went to the place of work. The surveys were carried out in difficult conditions: a short northern day, large snow cover, frosts of -40 degrees and more, periodic shelling from enemy aircraft.
Since the 1950s, Lengiprotrans has been developing a project for the West Karelian line, now part of the Oktyabrskaya railway. The transport development of the Karelian Autonomous Soviet Socialist Republic was necessary for the export of timber materials that were used to restore the national economy in the post-war years. The road was also of military-strategic importance, since it ran along the state border.
Since the 1950s, Lengiprotrans has been developing a project for the West Karelian line, now part of the Oktyabrskaya railway. The transport development of the Karelian Autonomous Soviet Socialist Republic was necessary for the export of timber materials that were used to restore the national economy in the post-war years. The road was also of military-strategic importance, since it ran along the state border.
The Novgorod - Smolensk line was designed as a link of the Leningrad (now St. Petersburg) - Orel railway, the construction of which began in pre-revolutionary times, but was suspended due to the First World War.
Surveys on the route were carried out in 1912, 1914, 1917, 1930–1931 and 1934. By 1935, the technical conditions, according to which the previous design and survey work were carried out, became obsolete. Lentransproekt (since 1951 - Lengiprotrans) was instructed to draw up a new complex technical project.
Vorkuta - Yugorskiy Shar is one of the northernmost objects of Lengiprotrans, completely located outside the Arctic Circle.
In the early 1930s, large reserves of coking coal were discovered in the Vorkuta region. In this regard, it was decided to build a railway line Vorkuta - Yugorsky Shar, which provided the shortest exit for exporting Vorkuta coals to the Barents Sea and further in the direction of Murmansk and Arkhangelsk.
Kotlas — Kozhva — Vorkuta railway line is a part of the North Pechora railway (since 1959 as part of the Northern Railway). The construction of the highway played an important role in supplying the country with fuel from the newly formed Vorkuta coal complex, especially during the occupation of Donbass during the Great Patriotic War. In the 1930s, Lentransproekt (since 1951 — Lengiprotrans) developed a project for the southern section of Konosha — Kotlas.
The railway line Leningrad - Moscow - Leninakan (now Gyumri) is a superhighway connecting the northwestern and central regions of the country with the Armenian SSR.
The line was electrified under the Lengiprotrans project in 1962. At that time, it was one of the longest electrified highways in the world.
Railway line Nyandoma - Mudyuga - a section of the Northern Railway.
The project of sealing the colored chain on the line was prepared by Lengiprotrans in 1956. In the same period, similar work was carried out at the Mudyuga - Kem section.
The Vyritsa — Orsha railway line is a section that is part of the Oktyabrskaya and Belorusskaya railways.
The project of the second tracks on the line was prepared by Lengiprotrans in the 1980s.
The port oil depot in the village of Izhevskoye is located on the northern coast of the Kaliningrad Bay. The terminal accepts, stores and ships oil products by road and rail.
In the 2000s, as part of the construction of the oil depot, Lengiprotrans designed the following facilities:
• water and electricity supply in the port park;
• communication devices: operational and technological communication, two-way park communication;
• fire-fighting installations: automatic alarm in the post of electrical interlocking, water supply, water storage tanks;
