The shortlist is made up of:

  • Hochtief (Germany) with OHL (Spain)
  • FCC (Spain)
  • Vinci (France)
  • Glavbolgarstroy and Mostroy (Bulgaria)
  • Zublin (Germany), Alpine Mayreder (Austria) and Eiffel (France)
  • Bouygues (France), Transstroy Varna (Bulgaria) and Rizzani de Eccher (Italy).

Tenders are due in by 15 September.