History
Morishita Station opened on 21 December 1978 as a stop on the Toei Shinjuku Line, beneath the intersection of Shin-Ōhashi-dōri and Kiyosumi-dōri in Kōtō. When the line introduced express service in 1997 it was initially a pass-through; the station gained express stops only after the Toei Ōedo Line opened here on 12 December 2000, making Morishita a two-line transfer point. The crossing structure between the two lines had been pre-installed during Shinjuku Line construction in anticipation of the Ōedo Line route. PASMO support began on 18 March 2007, station management transferred to the Monzen-Nakachō ward office in April 2015, and a second platform-to-concourse lift on the Shinjuku Line side entered service on 21 December 2019.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
The Ōedo Line tunnel cuts directly beneath the Shinjuku Line at the station, and a single elevator shaft links the basement-one concourse to platforms on both basement-two and basement-three levels.