Suidōbashi Station (水道橋駅 Suidōbashi-eki) is a railway station which straddles Tokyo’s Chiyoda and Bunkyō wards, operated jointly by East Japan Railway Company (JR East) and Tokyo Metropolitan Bureau of Transportation (Toei).
The JR East part of the station is located on an elevated viaduct and has two side platforms serving two Chūō-Sōbu Line tracks, with platform 1 being used by westbound trains and platform 2 being used by eastbound trains. South of the platforms there are an extra two tracks for Chūō Line (Rapid) trains, which bypass the station non-stop. There are two exits from the station; the east exit is the busier of the two and features a staffed “Midori no Madoguchi” ticket office, ticket vending machines, lockers, and toilets. The west exit also has these amenities except for the ticket office.
AloJapan.com