The final two sections of the Big Circle orbital metro line in Moscow were formally opened on 1st March 2023. The final segments were two standalone sections totalling 23 line-km. A 15.2 km section links Nizhegorodskaya in the east with Kakhovskaya in the south, serving six intermediate stations. Nizhegorodskaya is to become a major transport hub on the eastern edge of Moscow, providing interchange with Line 15 and the orbital Line 14, the Central Circle. A 7.7 km northern section links Savyolovskaya on Line 9 with Elektrozavodskaya on Line 3, adding three intermediate stations. The completion of the Big Circle Line makes it the longest orbital metro line in the world at 70 km, according to Moscow Metro. This is 13 km longer than Beijing’s Line 10. The 31 stations on the Big Circle Line provide 47 interchanges with existing or planned metro lines, as well as with the Moscow Central Diameter and other commuter rail lines.
