The development of the railway infrastructure of the Ust-Luga railway hub and on the approaches to it was dictated by the need to increase the volume of cargo transshipment at the Ust-Luga Commercial Sea Port.
In the postwar years, Lentransproekt (since 1951 - Lengiprotrans) continued to work in Kazakhstan. In 1948-1955, the electrical interlocking of forty-nine turnouts was developed at the Bolshaya Mikhailovka railway station of the Tselinnaya railway. The main goals of the project are to ensure the safety of train traffic, increase the station's capacity, and reduce the number of switchmen. Devices for blowing points were designed and the construction of an EC post at the station.
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.
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.
The Tosno - Malaya Vishera - Bologoye - Likhoslavl - Klin railway line is part of the Oktyabrskaya Railway.
The project for the electrification of the line was developed by Lengiprotrans in the 1960s – 1970s in connection with the need to strengthen power supply devices for high-speed traffic.
In the early 2000s, Lengiprotrans developed a project for the reconstruction of the St. Petersburg railway junction with electrification and the development of intra-nodal lines.
The extension of the tracks of the Predportovaya station to a useful length of 1500 m was carried out with electrification. The length of the newly electrified tracks is 64.7 km.
At the St. Petersburg-Sortirovochny-Moskovsky station, the following were designed:
• automatic fire extinguishing installation;
• external engineering networks;
The Riga - Jelgava railway line is the shortest electrified branch of the Latvian Railway.
In the period 1976-1980, Lengiprotrans developed a project for transferring the electrified section Riga - Jelgava to telecontrol. The same work was carried out on the Riga - Tukums section.
Telecontrol devices included:
• telemechanics dispatch center;
• executive points;
• relay devices;
• communication devices.
The Kehra - Aegviidu railway line is a section on the Tallinn - Tapa line of the Estonian Railways.
The technical-working project for electrification of the site was developed by Lengiprotrans in 1971-1974.
The railway line Vilnius - Kaisiadoris is a section of the Lithuanian railways.
In the early 2010s, Lengiprotrans developed a project for the reconstruction of a double-track section Vilnius (excl.) - Kaisiadoris (inc.) For a speed of 160 km / h.
The railway line Vilnius - Kaisiadoris is a section of the Lithuanian railways.
In 2011–2014, Lengiprotrans developed a project for the reconstruction of a double-track section Vilnius - Kaisiadoris for speeds of 160 km / h. As part of a complex technical project, a contact network was designed on the line.
