The first expansion of the metro took place in 1958, when the first line (later to become the Kirovsko-Vyborgskaya Line) was extended beneath the Neva river to the Finlyandsky Rail Terminal. Later this same line was extended when the Vyborgsky radius, constructed in the 1970s, brought the metro to new residential areas constructed in the north-east of the city, and by 1978, those further out, in the nearby Leningrad Oblast. The metro was expanded to the south-west, with the construction of the Kirovsky radius, in 1977.