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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.

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.

The Kirovsk-Afrikanda highway passes through the territory of the Murmansk region. The project of the road was developed by the specialists of Lengiprotrans in the 1970s.

Kaliningrad is a railway station of the Kaliningrad railway, serving passenger trains of short and long distance.

In the period 1963-1983, Lengiprotrans carried out design work for the reconstruction of facilities at the Kaliningrad station.

During the survey, a plan for the location of mine workings was prepared.

Chernyakhovsk is a railway station on the Kaliningrad-Kaunas line in the city of the same name in the Kaliningrad region.

In the late 1990s - early 2000s, Lengiprotrans developed a project for electrical interlocking (EC) with partial track reconstruction at the Chernyakhovsk station.

In the course of the survey, soil and geological surveys, laboratory analyzes of soil and water, and mine workings were carried out. Intersections and longitudinal profiles, a master plan of utilities for the station were developed.

В 1970-е годы «Ленгипротранс» разработал проект автодорожного моста через реку Колу в поселке Вильдинстрой Мурманской области.