The railway line St. Petersburg - Moscow runs through the territory of St. Petersburg and Moscow, Leningrad, Novgorod, Tver and Moscow regions. The population of the region served by the railway is more than 25 million people, which ensures a steady passenger traffic along the line.
At the turn of the 20th – 21st centuries, Russia began to actively introduce high-speed traffic into the railway network. Lengiprotrans has developed a project for organizing high-speed passenger train traffic on the St. Petersburg - Buslovskaya section (State Border). This is the first highway connecting Russia with Europe by high-speed traffic.
In the 1980s, Lengiprotrans developed a project for the Obskaya - Bovanenkovo line, the northernmost railway in the world. The road was intended for the development of the Bovanenkovskoye and Kharasaveyskoye gas fields on the Yamal Peninsula. In the early years, construction proceeded at an intensive pace, but with the onset of the economic crisis of the late 1980s, it significantly decreased. By the early 2000s, the line was laid to the Khralov junction (km 267), named in memory of the chief engineer of the Lengiprotrans Institute A.Ya. Chralov.
