The U1 extension project

A substantial improvement of Vienna's transport infrastructure

5 new stops, service from Leopoldau to Oberlaa

From 2017, the U1 underground line will operate between Leopoldau and Oberlaa, bringing in particular people in the Favoriten district closer to the city centre.

The U1 line extension will be completed and opened for service on 2 September 2017, comprising 4.6 kilometres of new lines and five new stations (Troststraße, Altes Landgut, Alaudagasse, Neulaa and Oberlaa), making the U1 Vienna’s longest underground line (19.2 kilometres). Around EUR 600 million has been invested in extending the red line.

Extending the U1 to the south of Vienna

Preparatory work for the U1 line extension began back in autumn 2010. Tunnelling work began in spring 2012 and, when the U1 line extension opens on 2 September 2017, the U1 will then travel as far as Oberlaa.

The new U1 line extension follows directly on from the existing station at Reumannplatz. From here, it travels under Favoritenstraße to Altes Landgut and then on to Alaudagasse. Around Altes Landgut, the underground passes under the roundabout known as the Verteilerkreis and the Laaerberg tunnel (A23 motorway). The underground line then returns to ground level around the future station at Alaudagasse to continue its path to Oberlaa.

Tram line 67 will be re-routed accordingly – along with all other surface-level traffic – once the new U1 line extension has been finished. The future station at Alaudagasse will become a key public transport hub, where the direct connection of numerous bus lines to the underground network will shorten travelling time to the city centre.

In the course of the extension, preliminary work was also done to enable a possible branch line from Alaudagasse to Rothneusiedl. This means that – with corresponding urban development in this area – the U1 could alternatively travel to Rothneusiedl.

Favoriten moves closer to the city centre

Around 50,000 inhabitants of Favoriten living in the immediate catchment area of the new stations will benefit from the extension of the U1. Travelling time from Oberlaa to Stephansplatz will be cut from nearly 30 minutes, at present, to just 15 minutes.