Road Ledmozero - Kostomuksha - a section of the regional road Kochkoma - Ledmozero - Kostomuksha - the state border in Karelia. The highway connects the central regions of the republic and provides a link between the Kola highway and the state border with Finland.
In the 1970s Lengiprotrans developed a road project. During the same period, the institute designed the Ledmozero - Kostomuksha - state border railway line.
In 1976 the site was put into operation.
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.
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.
Ventspils is a large railway junction in Latvia. Here, cargo is transferred from the commercial seaport to the railroad.
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 Riga - Ogre - section of the line Riga - Aizkraukle - Krustpils of the Latvian Railway.
In the late 1950s - early 1970s, the Riga - Aizkraukle section, the longest electrified line in Latvia, was electrified. As part of this, in 1959, according to the Lengiprotrans project, the Riga-Ogre section was electrified for a direct current of 3 kV.
The transfer of the railway to electric traction has made it convenient transport links between the resort areas of the Baltic coast and other regions of the country.
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.
Tselinograd - Kokchetav (now Astana - Kokshetau) is a meridional line connecting the South Siberian and Central Siberian lines in Kazakhstan.
In the 1970s, Lengiprotrans developed a project for the reconstruction of the line with the laying of second tracks. In the same period, the institute designed double-track inserts on the site with centralized dispatching for 429 switches.
The length of the double-track inserts is 183 km.
The length of dispatch centralization is 297 km.
