Kakhovskaya line (stations “Kashirskaya”, “Varshavskaya” and “Kakhovskaya”) was opened to passengers in 1969. After 50 years of operation, the line infrastructure needs a large-scale reconstruction. After the renovation, the stations "Kashirskaya", "Varshavskaya" and "Kakhovskaya" will become part of the Big Circle Line.
As part of the project, platforms will be repaired, systems responsible for the safety of train traffic will be modernized. The builders will change the lining of the track walls and columns, reconstruct turnaround dead ends, replace part of the track superstructure and almost all engineering systems.