The construction work for the section Fehrbelliner Platz–Richard-Wagner-Platz began in 1969 which is H-West-II. By 1970, the then shortest and less frequented subway line of Berlin, line 5, oscillated between Deutsche Oper and Richard Wagner Platz. Their old route was shut down for passenger traffic, and a new station was built several meters below the old one. The remaining tunnels could be converted into an operating section, making it the second exchange line between small and large profile after the Waisentunnel at Alexanderplatz station. The route continues under the Brandenburgische Straße and crosses the Kurfürstendamm at Adenauerplatz, where a train station was also built. The station was created as a crossing station as it was (and officially still is) planned to extend the current U-Bahn line U1 from Uhlandstraße to Adenauerplatz. After Adenauerplatz, the track swings under Wilmersdorfer Straße and passes under the Stadtbahn.