For many years, Lengiprotrans has been developing a general scheme for the development of the St. Petersburg (formerly Leningrad) railway junction. In the 1950s, the institute developed a general layout of the site for a 15-year perspective (1950-1965).
In accordance with the general scheme, the long-distance and suburban train traffic was transferred to diesel and electric traction.
During this period, the sections were electrified:
• Leningrad - Zelenogorsk - Roshchino (1951-1954);
• Leningrad - Sestroretsk - Beloostrov (1952);
Since the middle of the last century, Lengiprotrans has been developing a general scheme for the development of the St. Petersburg (formerly Leningrad) railway junction. In the 1960-1970s, the institute developed a general layout of the unit for the estimated 1980-1985 with a forecast up to 2000. On February 5, 1970, the junction layout was approved by the Ministry of Railways.
The Perm railway junction is a transit junction of the Perm branch of the Sverdlovsk railway, providing transportation of goods and passengers.
In 1935 Lentransproekt (since 1951 - Lengiprotrans) developed the general scheme of the Perm junction in connection with the increase in its traffic density. In 1937, a project was drawn up for the western sorting station of the junction.
In the 1960s – 1970s, Lengiprotrans prepared projects for highways in the Leningrad Region by order of the USSR Ministry of Agriculture.
A major overhaul of the existing roads was planned with reconstruction in certain sections:
• Pulkovo - Vanakyula (15 km);
• Zalesye - Porechye (30 km);
• Vispory - Novoselye (10 km);
• Ovtsino - Plant im. Sverdlov (15 km).
The general scheme for the development of the railway junction of St. Petersburg and the Leningrad Region was developed by Lengiprotans in 2014.
The Vologda — Cherepovets railway line — a section of the Northern Railway, was put into operation as part of the Obukhovo — Vologda line in 1905.
The project of the second tracks on the Vologda — Cherepovets section was developed by Lengiprotrans in 1945–1954. This was due to the post-war task of restoring the country's heavy industry and strengthening the railways for the transportation of manufactured products.
Small (Children's) October Railway (MOZhD) is designed to educate and train schoolchildren and students for railway professions.
The first MOZhD in Leningrad was opened in 1948. It was 8.1 km of track and included 3 stations (Kirovskaya, Zoo, Ozernaya). In this form, the road existed until 1964. Subsequently, the line was shortened, and by the 1990s it was only 2 km.
The Mikun - Syktyvkar railway line is a dead-end branch of the Northern Railway. In the late 1950s, the USSR government decided to build it. The project of the line was developed by the specialists of Lengiprotrans.
One of the significant objects of the route is the bridge crossing over the Vychegda river, combined for rail and road traffic.
In the 1970s Lengiprotrans took part in the development of the external transport system of the Kostomuksha Mining and Processing Plant (GOK). One of the first projects was developed for the Ledmozero - Kostomuksha - State Border railway line. The road was intended to ensure the operation of the GOK and, in particular, the export of products (iron ore pellets) both in the direction of Russia and to the Finnish factories in the Oulu region.
In the 1980s, Lengiprotrans developed a project for the Obskaya — Bovanenkovo line, the northernmost railway in the world. The route starts from the Obskaya station, which is part of the Transpolar highway, and goes to the North of the Yamal Peninsula.
