Kabatas - Mahmutbey Metro Line

Tendered by Istanbul Metropolitan Municipality, Kabatas – Mecidiyekoy – Mahmutbey (KMM) metro line was constructed by Alsim Alarko. The line is 22.5 km long and includes 19 stations and a depot area. Alsim Alarko delivered construction of tunnels and stations between Kabatas and Mecidiyekoy along with finishing works and installation of electro-mechanical systems between Mecidiyekoy and Mahmutbey. In 2023, it is estimated that the line will carry 807.000 passengers daily.

KMM is the first metro project in Turkey designed on a BIM platform using 5D design technology. Projects prepared by Prota were nominated to AEC Excellence Awards final in Infrastructure category.

Within the scope of the project, Prota’s services include;

  • Track-way Alignment Engineering and Railway Design
  • NATM and TBM Tunnel Design
  • Architectural and Finishing Works Design
  • Structural, Geotechnical and Excavation Support System Design
  • Electrical and Electromechanical System Design
  • Mechanical Engineering Design
  • Fire Safety Engineering and Control System Design
  • Line Electrification and Catenary System Design
  • Acoustic and Vibration Design


  • LocationIstanbul, Turkey
  • ClientAlsim Alarko
  • Total Length22.5 km
  • Term of Contract2015 - 2018