The total length of metro lines is 143 km
“The tunnelling of the last tunnel of the Big Circle Line (BCL) between the Nagatinsky Zaton and the Klenovy Bulvar stations has been completed”, Sergei Sobyanin, Mayor of Moscow, said.
Mosinzhproekt Engineering Holding is the operator of the Moscow Metro Development Programme.
“Today we have a great historic event. The tunnelling of the biggest in the world metro circle line is complete. The total length of metro lines (one-way) is 143 km. It’s a large amount of work. There is a entire city beneath the city. The next stage is the development of the remaining 10 stations. I hope that this major work will be completed during the year,” said Sergei Sobyanin.
The Mayor stressed that manual tunnelling was carried out in some sections of the BCL under difficult conditions at a depth of up to 70 metres.
“I wanted to thank the builders for the exploit they made, having done such a tremendous job,” stressed Sobyanin.
The Big Circle Line has single-track and double-track tunnels. Thus, the 10-metre diameter tunnels are constructed on two sections, from the Mnyovniki to the Davydkovo stations, and between the Tekstilshchiki station and the transfer chamber behind the Klenovy Bulvar station.
The last tunnelling was carried out on the double-track running line between the Nagatinsky Zaton and the Klenovy Bulvar stations of the BCL eastern section.
The total length of metro lines (one-way) is 143 km, tunnelled on Big Circle Line from 2012 to 2021. Its length will exceed 70 km, and it will accommodate 31 stations, 22 of which are already servicing the passengers.