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| Stuttgart–Ulm line | |
|---|---|
| Name | Stuttgart–Ulm high-speed railway |
| Native name | Wendlingen–Ulm |
| Locale | Baden-Württemberg |
| Start | Stuttgart |
| End | Ulm |
| Stations | Stuttgart Hauptbahnhof, Plochingen station, Kirchheim unter Teck, Geislingen an der Steige, Ulm Hauptbahnhof |
| Owner | Deutsche Bahn |
| Operator | Deutsche Bahn |
| Line length | 60 km (Wendlingen–Ulm) |
| Electrification | 15 kV 16.7 Hz AC overhead |
| Gauge | 1,435 mm |
Stuttgart–Ulm line is a major high‑speed rail corridor in the German state of Baden-Württemberg linking the Stuttgart metropolitan region with Ulm. Conceived as part of the Magistrale for Europe corridor, it aims to reduce journey times between Karlsruhe, München, Zurich, and Munich via enhanced connections to Frankfurt am Main and Berlin. The project involved federal, regional and municipal stakeholders including Bundesverkehrsministerium, Land Baden-Württemberg and local authorities in Esslingen (district) and Alb-Donau-Kreis.
The alignment begins at Wendlingen am Neckar junction, diverging from the existing Plochingen–Immendingen railway and runs southwest towards Ulm Hauptbahnhof, traversing the Neckar valley, cutting under the Schurwald and crossing the Alb plateau. It connects with the Stuttgart Hauptbahnhof approaches via the Filderbahn axis and interfaces with the Stuttgart S-Bahn network at Stuttgart Flughafen/Messe station and Langenfeld (Baden) planning nodes. Major civil structures include the Filder Tunnel, the Steinbühl Tunnel, the Albaufstieg viaducts and the Blauen and Achalm cuttings near Reutlingen and Pfullingen. The route provides interchange potential for long‑distance services to Nürnberg, Augsburg, Innsbruck, Linz and Paris via the Basel junction.
Planning roots trace to postwar rail modernization debates involving Deutsche Bundesbahn and later Deutsche Bahn AG. Early concepts appeared in the 1970s as part of trans‑European initiatives tied to the Trans-European Transport Network and the Magistrale for Europe campaign championed by Matthias Wissmann and other regional politicians. Environmental assessments engaged NGOs such as Bund für Umwelt und Naturschutz Deutschland and NABU, while legal challenges reached administrative courts in Stuttgart. Political milestones included funding agreements between the Bundesrepublik Deutschland and Land Baden-Württemberg and parliamentary approvals in the Bundestag and Landtag of Baden-Württemberg.
Construction required tunnelling technologies and heavy civil works managed by contractors like Hochtief, Bauer AG and international consortiums. Geotechnical surveys referenced the Swabian Alb karst conditions and required grouting and diaphragm walls for the Filder Tunnel. Signature engineering achievements included the long‑span viaducts over the Neckar and the pioneering use of tunnel boring machines in brittle Muschelkalk near Geislingen. Track laying employed slab track systems pioneered on other projects such as the Nuremberg–Erfurt high-speed railway and used prestressed concrete elements similar to those on the Hanover–Würzburg high-speed line. Safety systems integrated European Train Control System provisions and remote monitoring inspired by work on the Gotthard Base Tunnel.
Operations are dominated by Intercity-Express services operated by Deutsche Bahn with complementary regional services by S-Bahn Stuttgart and Regional-Express trains. Timetabling coordinates with cross‑border operators including ÖBB, SBB CFF FFS and private operators licensed by the Eisenbahn-Bundesamt. Freight paths remain on legacy routes via Plochingen for heavy traffic linking Czech Republic and Hungary corridors. The corridor reduced scheduled travel times between Stuttgart Hauptbahnhof and Ulm Hauptbahnhof and enabled improved punctuality metrics tracked by Eisenbahn-Bundesamt and the European Commission transport observatories.
Electrification is 15 kV 16.7 Hz AC, compatible with ICE 3, ICE 4 and Railjet sets operated by DB Fernverkehr, ÖBB and SBB. Rolling stock includes DB Class 403, DBAG Class 406 and multi‑system locomotives such as the ÖBB Taurus for cross‑border duties. Signalling upgrades implemented ETCS Level 2 overlay and retained Punktförmige Zugbeeinflussung interfaces. Stations incorporate platform-edge doors at some regional hubs, modern passenger information systems from providers linked to Deutsche Bahn Digital initiatives, and intermodal nodes for Deutsche Bahn RegioBus services and FlixTrain connectivity.
Environmental impact assessments addressed habitats in the Schurwald and Alb regions, archaeological surveys coordinated with the Landesamt für Denkmalpflege Baden-Württemberg and mitigation measures negotiated with Stadt Stuttgart and Landkreis Esslingen. Noise abatement included acoustic barriers and low‑noise rail treatments in proximity to Kirchheim unter Teck and Plochingen, following precedents from the Frankfurt–Mannheim corridor. Community engagement programs featured consultations with BUNDjugend and municipal citizen initiatives; compensatory afforestation and wetland restoration were overseen by regional conservation authorities and funded through commitments by Deutsche Bahn and the Bund.
Planned enhancements encompass ETCS finalisation, capacity increases tied to the Magistrale for Europe masterplan, and potential integration with the proposed Stuttgart 21 peripheral works and Ulm 21 urban projects. Studies by Bundesverkehrsministerium and the European Investment Bank examine freight relief lines, digital interlocking expansions and hydrogen or battery hybrid traction trials in collaboration with Siemens Mobility and Alstom. Cross‑border timetable harmonisation with SBB CFF FFS and ÖBB remains part of regional transport strategies coordinated through the Rhine-Alpine Corridor framework.
Category:Railway lines in Baden-Württemberg Category:High-speed rail in Germany