Development of business units

Development of the infrastructure

In 2022, we made capital expenditures in infrastructure for the construction and renewal of the network, stations and energy facilities amounting to € 10.7 billion. In addition, € 2.5 billion was spent on maintenance from DB funds. The negative impact of increases in the prices of materials and material bottlenecks on ongoing construction projects was limited by effective crisis management and close coordination with the construction industry. In many cases, close monitoring and targeted countermeasures enabled us to resolve any disruptions that occurred quickly in cooperation with the construction industry.

Two major projects went into operation in December 2022:

  • New construction line Wendlingen — Ulm: With the commissioning of the new construction line as part of the Stuttgart — Ulm rail project, travel times for long-distance transport between Stuttgart and Ulm were reduced by about 15 minutes three years before the commissioning of the project as a whole. In regional transport, for the first time the new Merklingen station will be served every hour on the new construction line. The new construction line is equipped with the European train control system ETCS. A milestone was also reached at the Stuttgart hub: in early October 2022, the project for the seven railway tunnels in the Stuttgart valley was completed. A total of 51 km of tunnels have been built in recent years.
  • Railway connection to Jade-Weser-Port: The rail connection to Germany’s Jade-Weser-Port also went into oper­ation in December 2022. The double-track, electrified ­Oldenburg — Wilhelmshaven line provides a high-performance connection between the port and the national and European rail network. To this end, the undersoil of the line was extensively upgraded and the line was continuously expanded to run on two tracks and electrified. A 44.5 km noise barrier lowers the rail transport noise for residents.

An additional focus in 2022 was the repair of the damage caused in North Rhine-Westphalia and Rhineland-Palatinate by flooding in 2021. Most of the lines are already back in operation. In June 2022, just under one year after the flood, a financing agreement was concluded with the states of North Rhine-Westphalia and Rhineland-Palatinate to electrify the lines in the Ahrtal and the Eifel region.

Other milestones in the expansion and renewal of the rail network in 2022 included:

  • Hamburg hub: In January 2022, a second eastern bypass track near Maschen was put into operation in the Hamburg hub. The railway line is one of the most important connections for Hamburg’s seaports. The second eastern bypass track at Maschen is one of numerous measures to clear the bottlenecks at the Hamburg railway hub and to make it more efficient in the future.
  • Four-track expansion between Bamberg and Ebensfeld: In April 2022, one year earlier than planned, the four-track expansion between Bamberg and Ebensfeld (Hallstadt — ­ Breitengüßbach expansion) on the Nuremberg — Erfurt expansion line/new construction line (German unification transport project (VDE) no. 8.1) was completed. This means that separate tracks for high-speed transport and regional and freight transport are available to the north of Bamberg. The new dual-track line heading toward Erfurt/Leipzig/Berlin and the dual-track line heading toward Lichtenfels/Saalfeld/Jena split at Ebensfeld.
  • Fulda — Würzburg line renewal: Between June and De­­­cem­ber 2022, the next stage for the renewal of the Hanover — Würzburg high-speed line was completed with the line renewal in the Fulda — Würzburg section.
  • Gäubahn: The two-track expansion of the Horb — Neckar­hausen section on the Stuttgart-Singen — Germany/Switzerland border (Gäubahn) expansion line commenced in June 2022.

Construction began in 2022


Project name

Project description

Stuttgart-Singen — border between Germany/Switzerland (Gäubahn) expansion line

  • Horb — Neckarhausen dual-track expansion

Lines affected by flooding

  • Electrification, new construction and expansion of sections on the Eifel line and the Ahrtal railway

Cologne hub

  • 6-track expansion south of Gummersbacher Straße to the Cologne/Bonn Airport North branch (currently 4 tracks)

Knappenrode — Horka expansion line

  • Start of ETCS expansion

Munich S-Bahn (metro)

(Erding Ring Closure)

  • 2nd construction phase: 1st construction area Munich Airport—Schwaigerloh (construction of new dual-track electrified line including turning point in Schwaigerloh)

Commissioned in 2022


Project name

Project description

Nuremberg — Erfurt expansion/new construction line (German unification transport project no. 8.1)

  • Hallstadt—Breitengüßbach 4-track expansion (plan approval section 23)

Hamburg hub

  • Eastern Maschen bypass (additional bypass track)

Oldenburg — Wilhelmshaven expansion line

  • Sande track relocation (new dual-track construction)
  • Fully electrified line

Wendlingen — Ulm new construction line

  • dual-track high-speed line between Wendlingen and Ulm

Berlin — Dresden expansion line

  • Expansion of Wünsdorf station with noise barriers, replacement of a level crossing and renewal of switches, tracks and overhead wires, construction of a new electronic interlocking

In addition, in 2022, the following requirement plan and Municipal Transport Financing Act (Gemeindeverkehrsfinanzierungsgesetz; GVFG) projects were under construction:

Projects under construction in 2022


Project name

Project description

Stelle — Lüneburg expansion line

  • Fitting line with ETCS

Nürnberg — Erfurt expansion/new construction line (German unification transport project no. 8.1)

  • Forchheim — Eggolsheim 4-track expansion (plan approval section 19)
  • Eggolsheim — Strullendorf 4-track expansion (plan approval section 21)
  • Preliminary measures at the Bamberg hub (for example interim construction status and platform extension)

Leipzig — Dresden expansion line (German unification transport project no. 9)

  • 3rd construction phase: Zeithain — Leckwitz expansion line (modern signaling plant adjustment, line speed to 200 km/h)

Karlsruhe — Stuttgart — Nuremberg — Leipzig/Dresden expansion line

  • Chemnitz — Chemnitz-Kappel (renewal of overhead wires, signaling equipment, noise protection)
  • Gaschwitz — Werdau expansion line (expansion with modern electronic interlocking technology, renovation of superstructure and command and control technology for line speed to 160 km/h, overall commissioning)

Ludwigshafen — Saarbrücken expansion line

  • Fitting line with ETCS

Stuttgart — Ulm — Augsburg expansion/new construction line

  • Stuttgart 21 (including regional rail passenger transport share according to GVFG)

Karlsruhe — Offenburg —

Freiburg — Basel expansion/new construction line (1st and 2nd construction phase)

  • Karlsruhe — Rastatt South 4-track expansion including Rastatt tunnel (line section 1)
  • Müllheim — Auggen 4-track expansion (plan approval section 9.0)
  • Haltingen — Basel 4-track expansion (plan approval section 9.2)
  • Basel Bad station (plan approval section 9.3)

Amsterdam — German/Dutch border — Emmerich — Oberhausen expansion line

  • Oberhausen — Emmerich 3-track expansion and increase in signaling block density, fitting with ETCS

Frankfurt am Main hub

  • 2nd construction phase (new construction third Niederrad bridge)

Berlin hub (Dresdner Bahn)

  • Reconstruction of the dual-track line between Berlin-Südkreuz and Blankenfelde to run at 140 km/h

Combined transport

  • Rhine/Ruhr hub (unpowered train arrival rail-rail-transshipment, rail-road-transshipment connection)
  • Karlsruhe subway station (extension of the trans­shipment module to a crane-accessible length of 750 m in two construction stages)

Hanau — Würzburg/Fulda — Erfurt expansion/new construction line

  • Gelnhausen electronic interlocking and preliminary measures: new construction of road overpass, passenger underpass


  • Conversion of Dortmund Central Station
  • 4-track expansion of plan approval section 1.2: Leverkusen (Chempark) — Leverkusen Küppersteg and 4-track expansion of plan approval section 1.3: Leverkusen Rheindorf — Langenfeld Berghausen
  • Electronic interlocking Düsseldorf

Angermünde — Szczecin expansion line

  • Electrification of Angermünde — Passow (plan approval section 1)

Uelzen — Stendal — Magdeburg — Halle expansion line (East Corridor North)

  • Additional tracks in Schnega and Salzwedel stations

740 m network

  • Expansion of the passing loop to 740 m

Weddel loop

  • Weddel — Fallersleben Station branch 2-line expansion

Hamburg hub

  • Dual-track expansion/one-track new construction of S4 line Hamburg — Ahrensburg — Bad Oldesloe including construction of new stations

Cologne — Aachen expansion line

  • Extension of track 13 at Aachen Rothe Erde station

Rhine-Main S-Bahn (metro)

  • Bad Vilbel — Frankfurt am Main West 4-track expansion, 1st construction phase

High-speed regional rail traffic


  • 1st and 2nd construction phase: station measures

Nuremberg S-Bahn (metro)

  • 2nd construction phase: Nuremberg S-Bahn (metro) — Forchheim — Bamberg 4-track expansion

Munich S-Bahn (metro)

  • Construction of a new main line between Laim Station and Leuchtenbergring –2nd S-Bahn (metro) tunnel (initial plan of Federal State of Bavaria)

Berlin S-Bahn (metro)

  • S21 (1st construction phase) – expansion of the Berlin S-Bahn (metro) network through construction of a north-south corridor – connecting Berlin Central Station into the north-south corridor via two branches to the North ring of the S-Bahn (metro)

At the end of 2022, a total of 203 requirement plan and Municipal Transport Financing Act projects were in planning and under construction. Further information on the projects is available on the BauInfoPortal Web site.

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