During the Great Patriotic War, with the participation of Lentransproekt employees (since 1951 - Lengiprotrans), the Stalingrad - Saratov - Sviyazhsk railway line was designed and built to solve the most difficult problem of delivering material resources to the Stalingrad Front.
In the 1970s, Lengiprotrans developed a project to rewire the Pärnu - Mõisaküla narrow-gauge section to the 1520 mm wide gauge line with access to the Riga - Aloa - Myizaküla broad gauge line. This contributed to the creation of a 350 km direct railway line between Tallinn and Riga.
Also, within the framework of the title, a boiler room was designed at the Rujena-Novaya station of the Riga-Tallinn line.
In 1970-1980, Lengiprotrans developed a project for rebuilding the narrow-gauge line Svencheneliai - Utena - Panevezys to a wide track of 1520 mm.
In the course of the work, geotechnical surveys and exploration of open pits at the site were carried out, a production well for water was prepared.
The following objects were designed on the site:
• track complex of the Utena - Rubikiai section: reconstruction of 0.4 kV overhead lines, crossings of air-cable communication lines and radio;
The Frunze - Kant - Tokmak - Rybachye railway line, passing through the territory of Kyrgyzstan, became a continuation of the existing Lugovaya - Frunze line. The road was built in order to provide transport links (in conjunction with water transport on Lake Issyk-Kul) to the north-eastern part of the republic. The construction of the road was supposed to stimulate the widespread industrial development of deposits of coal, zinc ores and other minerals.
In the 1980s, Lengiprotrans carried out design and survey work for the external railway transport to the phosphate mining plant in the Syrian Arab Republic. This was due to the need to transport phosphate rock. An album of split point diagrams was developed.
Murmansk Commercial Sea Port (MSCP) is an ice-free port on the eastern coast of the Kola Bay of the Barents Sea, the largest transport company in the city of Murmansk. The port is integrated into the Murmansk transport hub.
MSCP provides transshipment of goods in the direction of the polar ports (Sabetta, Dikson, Khatanga). In 2000, MMTP took the 4th place in cargo handling among 37 Russian ports. The large volume of cargo transportation, in turn, required an increase in the throughput capacity of railway approaches to the port.
The Payuta - Novy Port railway line was developed in parallel with the Obskaya - Bovanenkovo line and is its branch at the Payuta station towards the Ob Bay.
The Payuta - Novy Port route was laid to the Novoportovskoye heavy oil field on the Yamal Peninsula. The oil reserves of this field have unique properties that make it possible to use it as a raw material for rocket fuel.
Apatit is a mining and processing plant (GOK) that produces phosphate raw materials. The GOK is located in the Murmansk region and is the backbone enterprise of Kirovsk and Apatitov.
In 1970-1980, Lengiprotrans developed a project of highways for the Apatit GOK for the export of products. The work was carried out in conjunction with the design of the external railway transport of the plant.
Railway line Roshchino - Vyborg - a section of the Vyborg direction of the Oktyabrskaya railway.
In the 1980s Lengiprotrans developed a project for second tracks on the electrified section.
At the end of the 1980s, Lengiprotrans developed a project for on-farm highways in the Smolensk Region within the framework of the Resolution of the Central Committee of the CPSU and the Council of Ministers of the USSR dated February 29, 1988, No. 272 "On the State Program for the Construction and Reconstruction of Highways in the Non-Chernozem Zone of the RSFSR."
The design was carried out on the basis of special regional norms and rules. Basically, these were highways between individual villages as part of state farms.
