Winterthur railway station
Winterthur is Switzerland's fifth busiest station, and is a major node between Switzerland's largest railway nucleus in Zürich and places in Eastern Switzerland (such as St. Gallen and Schaffhausen), as well as Germany (Munich), and Austria (Vorarlberg). The station is served by trains on Zürich's suburban S-Bahn network, as well as by regional and intercity trains, with most through passenger trains making a stop. It is also connected with Zürich's airport railway station Zürich Flughafen, which can be reached in about 15 minutes about every 8 minutes. Zürich Hauptbahnhof can be reached with up to 16 direct connections per hour and the fastest connection takes only 22 minutes (S12). The station has 9 standard gauge platforms (numbered 1-9).
Zürich Underground Railway
Zurich Airport would have been the northern terminus. Under the Butzenbüel and Holberg hills, the route would have led to the overground station Werft, where a short branch line from the train station Kloten would have terminated. Subsequently, the underground was to proceed parallel to the existing SBB line from Opfikon to just after the Eisfeldstrasse station. There, the northern portal of the tunnel section was to be located. Following Ohmstrasse and Schaffhauserstrasse, the intersection at Hirschwiesen would have been reached (in the area of the Milchbuck tram stop). Here, 30 metres below the surface, two station tubes connected by cross passages were to be built, the western one for trains on the trunk line and the eastern one for trains from and to Schwamendingen. The Schwamendingen branch line was to proceed partly underneath the Schöneich Tunnel of the planned motorway approach road A1L, and was to end at Hirschenplatz for the time being. From Hirschwiesen, the line would have reached Zürich Hauptbahnhof by means of a broadly shaped S-curve, crossing beneath the Milchbuck Tunnel, the Letten Tunnel and the Limmat.