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 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 Liiva - Lelle - Pärnu railway line is a section of the Estonian Railway connecting the capital of the country Tallinn (Liiva is part of the Tallinn junction) with the Baltic coast in Pärnu. The road was opened in the late 1920s with a narrow gauge of 750 mm.
The project of re-linking the railway section to a wide track of 1520 mm was developed by Lengiprotrans in the 1970s. This contributed to the creation of a direct route Riga - Tallinn with a length of 350 km.
The Ülemiste - Maardu railway line is a connecting section of the Ülemiste - Muuga railway in Estonia.
In the 1980s, Lengiprotrans was engaged in the reconstruction of the site to create convenient approaches to the seaport of Muuga.
In 1983, during the survey, groundwater analysis was carried out, mine workings and well columns were prepared.
In subsequent years, the site was designed:
• double-circuit high-voltage line 10 kV and low-voltage networks;
• auto-blocking and automatic cleaning of switches from snow;
Pärnu is a former railway station on the Tallinn-Pärnu line of the Estonian Railways.
In the period 1966-1970, the Architectural and Construction Department (now OPGS) of Lengiprotrans developed a project for an office building at Pärnu station.
Trust "Balttransstroy" is an organization of the USSR Ministry of Transport Construction, which carried out the construction of transport facilities on the territory of the Baltic republics and the Kaliningrad region. For construction, the trust used its own production facilities.
The production base of the Baltransstroy repair and construction department in Tallinn was built according to the Lengiprotrans project in 1971-1975.
The Kohtla-Järve and Ahtme gas shale plants are located in the northeastern part of Estonia.
The decision to build a new oil shale processing complex in Kohtla-Järve was made by the USSR State Security Committee in 1945. In the same year, Lentransproekt conducted an engineering-geological survey of sites for the construction of the Kohtla-Järve and Akhtme gas shale plants.
In 1948, the delivery of household gas produced from oil shale to Leningrad began. Later, the gas pipeline was directed to Tallinn and other cities in northern Estonia.
Narva is a border railway station on the Tallinn - Narva line of the Estonian Railways. Regular trains go through it in the direction of St. Petersburg and Moscow.
In the late 1960s - 1970s, Lengiprotrans carried out design and survey work to reconstruct the station.
In 1968-1969, longitudinal and transverse profiles of the station's track development were developed. In 1971, the plan of the Narva station and a set of devices for organizing passenger traffic to the Estonian TPP were designed.
Tallinn-Kopli - marshalling yard on the Keila-Tallinn line of the Estonian Railways.
The development and reconstruction of the station was designed by Lengiprotrans in 1956-1970.
In 1976-1980, Lengiprotrans developed a project for laying cable communication lines on the Pärnu Gruzovaya - Pärnu-Passenger section in Estonia.
