Neglinnaya River
In the period of economic collapse that accompanied the Civil War in Russia, Rerberg was employed by three major theaters of Moscow — Bolshoi, Maly and Moscow Art Theatre. In 1921—1923 he supervised emergency works on reinforcement of Bolshoi Theater foundations that were flooded by a wash from underground Neglinnaya River. Rerberg published proposals for a thorough renovation of Bolshoy, and these were slowly implemented under his supervision until Rerberg's death.