The applications for pre-selection of the tender were collected on 24 November 2011.
The companies that apply for pre-selection for the tender are as follows:
- Botek Boğaziçi - Ataç Mühendislik, 2. Emay Mühendislik, 3. Era Geology - Pro-Yapı Proje, 4. Erka-As - Eser Proje - Koba
Engineering, 5. Enye Construction, 6. Erbil Project, 7. Getinsa Engineering, 8. Geogis Kent Information Systems, 9. Kaiser Engineering,
- KMG Proje, 11. Mescioğlu Engineering, 12. Optim Obermeyer, 13. Protek Proje - Mega Mühendislik, 14. SWS
Engineering SpA, 15. Temelsu Mühendislik, 16. UBM A.Ş. - Aksa Project, 17th Yüksel Project