Moscow authorities announce that all tunnels on the Bolshaya Koltsevaya metro line will be completed by the end of the year Experts plan to complete the tunneling of all tunnels on the Big Circle Metro Line by the end of 2021.

The construction of the BCL remains one of the largest projects in the history of metro construction in Russia and the world. The total length of the line will be 70 kilometers, it is planned to open 31 stations. Modern tunneling complexes lay up to 12 meters of tunnels per day, even in the most difficult sections. In the course of work, specialists use the most accurate navigation systems. We add that the complete arrangement of the BCL will significantly reduce the load from the existing stations inside the circular metro line.

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