On 14 March 1985, two extensions opened: a 7.0 km, 5 station extension of Line 3 from Yokohama to Shin-Yokohama, and a 2.0 km, 2 station extension of Line 1 from Kaminagaya to Maioka. Line 1 would be extended by one station to Totsuka (a distance of 1.7 km) on 27 August 1989; a temporary station was in operation at that location from 24 May 1987 until that date. The most recent extension of Line 3, a 10.9 km section from Shin-Yokohama to Azamino opened on 18 March 1993. The final 7.4 km section of Line 1 from Totsuka to Shōnandai opened on 28 August 1999.