Assembly of the first of the four TBMs started in February.
The Herrenknecht EPB-6150 TBM, which has been already assembled, will be used to drive the tunnel between the Kossino-Ukhtomskaya and Nekrasovka stations, in the direction away from Moscow centre.
Assembly of the Lovat RME-242SE TBM, which will be used to drive the right interstation tunnel, is close to completion.
Also close to completion are the Robbins EPB-2015-371 TBM that will drive the right interstation tunnel and the Herrenknecht EPB-6340 TBM that will drive the left tunnel between the Kossino-Ukhtomskaya and Saltykovskaya Street stations, moving toward the center of Moscow.
The machines were used previously for driving six inter-station tunnels, extending the Tagansko-Krasnopresnenskaya line from the Vykhino station to the Kotelniki station. The 9km of tunnels were driven in less than 18 months.