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Fehmarnsund Tunnel Set for Late 2031 Completion Under New Six-Year Plan

This delay will extend the gap in rail connectivity between Germany and Denmark until after the planned 2029 Fehmarnbelt Tunnel opening.

Animation der geplanten Fehmarnsundquerung, vom Festland aus gesehen, oben in der Mitte die Fehmarnsundbrücke
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Overview

  • Eisenbahn-Bundesamt’s July 23 plan documents forecast a six-year, five-month build for the Fehmarnsund Tunnel, targeting late 2031.
  • The schedule leaves no regular rail service over line 1100 to Fehmarn until after tunnel commissioning, extending the rail link gap beyond the Fehmarnbelt Tunnel’s planned 2029 start.
  • Deutsche Bahn says it is collaborating with contractors on optimizations that could accelerate completion ahead of the conventional timeline.
  • The existing 1960s Fehmarnsund Bridge will continue to carry car traffic and could be adapted for electrified rail if approved by a 2027 decision.
  • The delay underscores the importance of binational coordination and budget planning to align Germany’s feeder link schedule with Denmark’s 2029 tunnel opening.