In the 1980s Lengiprotrans was involved in solving transport problems in the Komi Republic. Design of a road bridge under the direction of A.P. Petrova contributed to the solution of transport problems in Ukhta. Thanks to the rational organization of road traffic junction, a large overrun of urban transport was eliminated.
Prospecting and design work along the Voybokalo - Ladoga Lake line was carried out by employees of the Vologda expedition and the Leningrad project group in the most unfavorable conditions of a harsh winter and constant attacks by enemy aircraft. Research and construction were carried out simultaneously from several places. Working drawings were issued during construction.
The temporary railway line Polyana — Shlisselburg, known as the Victory Road, played a huge role in the fate of besieged Leningrad during the Great Patriotic War.
Railway line Kostanay (now Kostanay) - Uritskoye - a section of the railway Kostanay - Kokchetav (now Kokshetau), designed by Lengiprotrans for the development of virgin lands in the Kazakh SSR and a number of adjacent regions in 1954-1980.
The section Kustanai - Uritskoe was completed in the 1970s and rebuilt to a wide track. In the same period, the institute designed a centralized control system for 125 switches at the site.
Ülemiste is a stopping point in Tallinn on the Tallinn-Tartu and Tallinn-Narva railway lines.
In 2009–2010, Lengiprotrans took part in design work for the reconstruction of the Ülemiste railway junction. Work was carried out on the temporary removal of the contact network, overhead lines-10 kV AB and PE, fiber-optic communication cables from the tunnel construction zone on the Tallinn-Ülemiste stretch.
In the late 1990s - early 2000s, Lengiprotrans designed railway approaches to the Vysotsk seaport. A project was developed for railway transport of the terminal for reloading liquid ammonia and methanol. This was due to the need to transport oil products to the sea terminal, designed to transship 10.75 million tons of oil products per year.
Pääsküla is a railway station on the Keila - Tallinn line of the Estonian Railways.
In 2010 Lengiprotrans took part in design work for the reconstruction of a traffic intersection at Pääsküla station. Work was carried out to temporarily remove the contact network from the tunnel construction zone.
Khovrino is a junction railway station on the main line of the Oktyabrskaya railway.
The project was implemented as part of the program for the development of transport and logistics centers (TLC) for the period until 2020, which provides for the closure of a number of freight yards and the reconstruction of existing ones with subsequent creation. TLC in their place. The program is designed to create the most convenient conditions for the redistribution of goods for urban needs.
The design work at the facility consisted of two stages:
The construction of the Baikal-Amur Mainline (BAM) can rightfully be called a significant achievement of transport construction at the end of the 20th century. The specialists of Lengiprotrans were engaged in the design of BAM sections in different periods: Komsomolsk — Sovetskaya Gavan in the 1940s, Chara — Tynda in 1967–1984.
