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.
Karasuk - Kamen-na-Obi section of the West Siberian railway, passing in the south of the Siberian Federal District of Russia.
In the 1950s, Lengiprotrans developed a project for the Karasuk - Kamen-na-Obi line as part of the transport development of virgin and fallow lands of the Kazakh SSR and adjacent territories. Hydrological and hydrogeological surveys of water supply sources for the new railway were carried out. Drilling of deep wells was used.
Kostanay (now Kostanay) - Kokchetav (now Kokshetau) is a section of the Central Siberian railway in Kazakhstan. The line was designed by Lengiprotrans in the 1950s – 1970s for the development of virgin lands.
At the site, hydrological and hydrogeological surveys of water supply sources for the new railway were carried out. Drilling of deep wells was used.
The Kaliningrad River Port is located on the Pregolya River and consists of 3 cargo areas:
• Pregol region, serving for cargo transshipment;
• Svetlovsky district, consisting of cargo and passenger berths;
• gravel sorting plant.
In the 1990s, Lengiprotrans developed a feasibility study for railway approaches to the Pregol port cargo area. The track section was designed.
In the 2000s, Lengiprotrans developed a project for the renovation of the Kundzinsala district railway park as part of the development of the Freeport of Riga. The project of the track part of the park 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.
In the 1980s, Lengiprotrans developed a project for the construction of a pedestrian bridge at the intersection of Mäekalda Street with Oktyabrsky Avenue in Tallinn. Power supply was also designed at the facility.
In the 1980s, Lengiprotrans developed a project for an overpass at the intersection of Krengolm Avenue with the railways of the Ministry of Railways in Narva.
At the facility, the following were designed: longitudinal profile, spans, auxiliary structures, power supply.
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.
