History
Mitsuzawa-shimochō Station opened on 14 March 1985 as an underground station on the Yokohama Municipal Subway Blue Line (Line 3), located beneath National Route 1 (Yokohama-Shindō). The station was excavated using the New Austrian Tunnelling Method (NATM), producing rounded large-section tunnels that are unusual for Japanese metro systems. Because the line passes partly beneath private property, the platforms were placed deep underground — roughly 27 metres below the surface — for noise mitigation. Wheelchair-accessible elevators and toilets were added in July 2002, and platform screen doors entered service on 28 April 2007.
History summarized from Japanese & English Wikipedia · last reviewed 2026-05-18.
Notes
The station was bored using the NATM method, producing the rounded dome-shaped platforms uncommon in Japanese subway design and reminiscent of European metro systems.