Deutsche Bahn has awarded the “733 Tunnel Ostbahnhof” contract – a part of the major Second Core S-Bahn Route project in Munich – to the “Tunnel Ostbahnhof” joint venture, in which Implenia and HOCHTIEF each have a 50% stake.
The contract, worth ‘somewhere in the high hundreds of millions of euros to the joint venture,’ according to an Implenia company statement, includes structural works for the Ostbahnhof stop and the tunnel tubes between Marienhof and Ostbahnhof. Construction work begins in June 2025 and is scheduled for completion by May 2033.
Across a stretch of around 3km, the joint venture will build two traffic tunnels and a rescue gallery, the München-Ost underground station, eight connecting structures between the main tunnels, a junction structure, several galleries and shafts, as well as shell construction of a new underpass in the Ostbahnhof station.
These demanding urban construction works present the joint venture with a range of challenges, from both a technical and logistical point of view, especially as the work will be undertaken while trains continue to operate through the busy Munich hub. Systematic use of BIM technology and proven Lean working methods will help keep the project running smoothly, says Implenia.
Implenia and HOCHTIEF have been working together on the Second Core S-Bahn Route in Munich since 2018 as part of the Marienhof joint venture that is building the central Marienhof station in the heart of the city. Implenia is the technical lead for the Marienhof joint venture, while HOCHTIEF is the technical lead for the Tunnel Ostbahnhof joint venture. In each case the other partner is taking the commercial lead.
Jens Vollmar, CEO of Implenia said: “Maintaining and developing a functioning transport infrastructure is central to the quality of life in our cities. I’m very happy that Implenia, with its many years of experience and comprehensive expertise, is once again able to contribute actively to improving public transport in Munich.”
With around 840,000 passengers per day, the Munich S-Bahn is one of the largest local public transport systems in Germany. Opened in 1972, the 11.3km long main line has reached capacity, as all S-Bahn trains have to cross the city centre through a single tunnel. The approximately 11km long Second Core Route is intended to relieve the existing line, serve as an alternative in the event of a fault and significantly shorten travel time from west to east by introducing a new express S-Bahn system.
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