Behold the just launched $6.6bn longest underground rail line in Moscow

The BCL has 31 stations, with 24 of those providing 47 interchanges to existing and future stations of the capital’s metro.

Maksim Liksutov, deputy mayor of Moscow for transport, said that the BCL would serve as an impetus to the capital’s development for decades to come, adding that it would help decrease the traffic flow on the city’s highways by up to 15 per cent, and would decongest metro lines by up to 25 per cent.

The Moscow metro, first opened in 1935 with a single line and 13 stations, has since expanded to encompass a sprawling underground network of over 250 stations.
The new Moscow metro, costing an estimated $6.6 billion to build, is one of the largest infrastructure projects in Russia in recent decades, The Moscow Times reports.

“The line has become the world’s largest underground subway ring,” President Vladimir Putin said via video link at the line’s opening this week.