the station sits in the approach to zürich hauptbahnhof, zürich's main station, on the zürich–baden line near its junction with the käferberg tunnel variant of the zürich–winterthur line, and to the north of the through tracks that carry long distance passenger and freight trains. it lies below the hardbrücke, a road bridge that crosses the rail tracks and forms an important north-south connection within the city. the station has two side platforms and a central island platform served by four tracks, with the two inner tracks on the line to via the käferberg tunnel, and the two outer tracks on the line to . the line to oerlikon is at a higher level, and thus the platforms are not all at the same level.