By order of the Ministry of Transport Construction of the USSR, Lengiprotrans designed the Chudovsky Reinforced Concrete Sleepers Plant (RCS). In the 1960-1970s, due to the growth of cargo transportation, the increase in the length and weight of trains, the used wooden sleepers began to be replaced by ZhBSh. The latter have a longer service life, provide uniform elasticity of the track along the length and stability in the ballast against shear.
In the 1970s, Lengiprotrans took part in the development of the external transport system of the Kostomuksha Mining and Processing Plant (GOK). As part of this, the Kostomuksha highway - the state border was designed. 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.
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.
A bridge crossing over the Vychegda river, combined for rail and road traffic, was designed on the highway.
In 1961, the entire Mikun - Syktyvkar line was put into operation.
Throughout its entire activity, Lengiprotrans has taken care not only of production areas, but also of the well-being of its employees. In this regard, a number of projects for residential buildings were developed, including a project for a 100-apartment building at 16 Varshavskaya Street. The Institute also built its own kindergarten at this address. The object is located in close proximity to the building of PJSC Lengiprotrans.
In the 1960s Lengiprotrans was involved in the development of the Tulun-Beloziminsk highway project. The end point is now known as the village of Belaya Zima by the river of the same name. The road was supposed to pass in the Tulunsky district of the Irkutsk region.
Since the 1930s, Lentransproekt (since 1951 - Lengiprotrans) has been developing methods for strengthening and treating the roadbed on railway lines. Significant work was carried out to strengthen the Volga landslide slopes, primarily the Ulyanovsk and Batrak slopes.
The rest house for locomotive crews (DOLB), built according to the project of PJSC Lengiprotrans, is located at the Luzhskaya-Sortirovochnaya station of the Oktyabrskaya railway, in the Kingiseppsky district of the Leningrad region. The facility was developed as part of the development of the public infrastructure of the Ust-Luga railway junction.
The highway overpass is designed at the intersection of the Vyborg - Kamennogorsk railway line with the Komsomolskoye - Priozersk highway near the Vozrozhdenie station of the Leningrad Region. The construction replaced the closed crossing PK 229 + 44.20.
An overpass with approaches allowed unhindered passage through the railway tracks on two levels, as well as approaches to the villages of Glubokoe, Vozrozhdenie, a stopping point of the 21st kilometer.
The Tuapse - Adler railway line is part of the North Caucasus Railway. This is a narrow strip, bounded on the left by the Caucasus Mountains and on the right by the Black Sea. The key problem on the route is rockfall from the upland side and wave action from the sea.
From the very foundation Lengiprotrans took an active part in the transport development of the Kazakh SSR. In 1954, a large-scale development of virgin and fallow lands began in the republic and a number of adjacent regions. The Council of Ministers of the USSR adopted a Resolution on the construction of railway lines in the region. The design of most of the facilities was entrusted to Lengiprotrans.
