Filder Tunnel and Tunnels to Ober- and Untertürkheim

The Filder Tunnel (Plan Approval Section/PFA 1.2) and the tunnels running to Ober-/Untertürkheim (PFA 1.6a) for the Stuttgart–Ulm rail project are being built by the ATCOST21 JV on behalf of the DB Stuttgart–Ulm GmbH. The Filder Tunnel’s two tubes will link Stuttgart’s new Central Station with the Filder Plain to the south of Stuttgart. The tunnels leading to Ober-/Untertürkheim connect the Central Station with the existing rail line in the Neckar Valley and the new railway yard at Untertürkheim (Fig. 1).
This article provides an overview of the status of the works as well a preview of forthcoming construction measures.

1 Project

The roughly 9.5 km long Filder Tunnel is the longest tunnel of the Stuttgart–Ulm project. Running from the Central Station, the tunnel with an average gradient of 16 ‰ overcomes a difference in height of approx. 155 m from the valley basin to the airport [1]. With the exception of the roughly 200 m long approach area at the Central Station, two single-track tubes are being constructed, which are connected by cross-passages at roughly 500 m intervals. In the two-track approach area, the Filder Tunnel will feature trains running at a maximum speed of 100 km/h up to the branch structure,...

Related articles:

Issue 2019-06 Germany | Deutschland

Stuttgart 21: First Tube of the Untertürkheim Tunnel Broken Through

The Deutsche Bahn has reached another important milestone on the Stuttgart 21 project: in the middle of November 2019, after about two years of excavating the Untertürkheim Tunnel, the first of two...

Issue 2017-06 Germany

Breakthrough in Filder Tunnel

The 9.5 km long Filder Tunnel connects Stuttgart Central Station, lying in a valley basin, with the Filder plateau located some 155 m higher. The four sections of its two tunnel tubes are being driven...

Issue 2017-02

Undertunnelling Tracks for the Metzberg Tunnel

1 The Project in General The upgraded Hanau­–Nantenbach line is part of the roughly 112 km long Main-Spessart route between Hanau and Würzburg. As this section has to cope with more than 200...

Issue 2020-01 Germany | Deutschland

Stuttgart–Ulm Rail Project: Progress on the Tunnel Projects

DB Breaks through to the Main Station from the South with the First Tunnel The next breakthrough on the Stuttgart 21 Project: on 11 February 2020, the tunnel drive from the south arrived at the...

Issue 2014-06 Germany

Stuttgart 21: Construction of the Filder Tunnel has commenced

In July a new phase has begun in the construction of Stuttgart‘s underground railway station as political and business representatives celebrated commencement of construction of the Filder Tunnel....