The Riga - Tukums railway line is a section of the Tornakalns - Tukums II electrified line in Latvia.
In the period 1976–1980, Lengiprotrans developed a project for transferring the Riga - Tukums electrified section to telecontrol. The same work was carried out on the Riga-Jelgava section.
Telecontrol devices included:
• telemechanics dispatch center;
• executive points;
• relay devices;
• communication devices.
Bolderaja II is a sorting railway station in Riga, on the Zasulauks - Bolderaja line of the Latvian Railway. Here the sorting of freight cars is carried out in the directions to Bolderaja, Daugavgriva and to the island of Krievu.
The project for the construction of the Bolderaja II station with a connecting track leading to the terminals of Krievu Island was developed by Lengiprotrans in 2013–2014. Thanks to the transfer of cargo terminals from Andrejsala and Eksportosta to the island of Krievu, the center of the Latvian capital was freed from cargo handling operations.
Riga railway junction is the main railway junction in Latvia, connecting the railway with the seaport on the Baltic coast. The most intensive traffic is carried out in the following directions: Riga - Tukums, Riga - Jelgava, Riga - Aizkraukle, Riga - Sigulda.
Railway line Skriveri - Krustpils - section of the line Riga - Krustpils of the Latvian Railway.
In 2010–2015, Lengiprotrans developed a project for the second main tracks on the Skriveri - Krustpils section in order to increase the transportation of export-import cargo through the Riga Sea Port.
В 1960–1970 годы «Ленгипротранс» разработал проект участка БАМа Чара — Тында протяженностью около 670 км. Трасса прокладывалась в районе Олекмо-Витимской горной страны через труднопроходимые хребты, расчлененные долинами рек.
The Bologoye - Riga railway line is the main direction of the meridional route associated with the delivery of goods to the seaport of the city of Riga.
In the period 1951-1955, Lengiprotrans developed a project for the second tracks on the site. More than 260 km out of 619 km of the route passed through the territory of Latvia.
The Kirishi Oil Refinery (Kirishinefteorgsintez) is a large oil refinery in the city of Kirishi, Leningrad Region, founded in 1966.
The plant was intended to provide the North-West of Russia with gasoline, diesel fuel and fuel oil. The external railway transport of the enterprise for the transportation of goods was developed by Lengiprotrans in the 1960s.
Leningrad Institute of Railway Engineers named after Academician V.N. Obraztsova (LIIZhT, now the Emperor Alexander I St. Petersburg State Transport University, PGUPS) is a higher technical educational institution in Russia, created at the beginning of the 19th century with the aim of training specialists for the construction of land and water transport routes.
Kokchetav (now Kokshetau) is the administrative center of the Akmola region of Kazakhstan.
In the 1980s, according to the Lengiprotrans project, the City Vocational School for 480 students was built in Kokchetav.
In 1986, the Department of nodes and stations of Lengiprotrans developed a project of an access road to the Akmola poultry farm and reconstruction of stopping point No. 96.
