
In order to constructing a section of the Nordmainische S-Bahn beneath central Frankfurt, Deutsche Bahn’s infrastructure construction arm, DB InfraGO, has appointed Implenia.
While the contract’s value is more than €200m, this section is due to run underground from Konstablerwache in the city centre via the new Frankfurt (Main) Ost S-Bahn station to Fechenheim.
Building of the initial Trog construction pit and the pit for the Frankfurt (Main) Ost underground S-Bahn station, as well as several auxiliary construction pits and associated civil engineering structures, will be up to Implenia, whereas it is also going to use TBMs to drill two tunnel tubes, each approximately 1.2km, and carry out extensive water management measures.
Considering that the construction site is in a densely populated inner-city area, and to meet modern, sustainable construction, Implenia will also provide a variety of special foundations, required.
The scheduled date for completing detailed building design work by Implenia is the end of 2025 and construction work is expected to commence in early 2026 and finish by 2031.
As one of the most important rail expansion and capacity projects in the Frankfurt (Main) hub, the Nordmainische S-Bahn project, which involves the construction of two additional tracks between Frankfurt, Maintal and Hanau north of the Main, will boost transport provision in the Rhine-Main region and improve reliability, comfort and punctuality.