Marmaray Project CR3 Contract Gebze-Halkalı Suburban Line Improvement: Construction and Electromechanical Systems/European Section Türk Telekom Underground Displacement

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Within the scope of the Marmaray CR3 project, the preparation of Telekom infrastructure
displacement projects that prevent road construction, the opening of Telekom infrastructure channel for the transfer of existing cables, laying of pipes in various sizes and numbers, manhole construction and assembly of prefabricated concrete manholes were carried out, and copper and fiber cable pulling works were carried out.

Marmaray Project CR3 Contract Gebze-Halkalı Suburban Line Improvement: Catenary Works and Electrification Works Extension of the Catenary System for the 6th Line of Halkalı Station

In order to use all of the train platforms used in Halkalı Station, the disassembly of 100 meters of the existing catenary line was completed and 200 meters of line was re-assembled.

Marmaray Project CR3 Contract Gebze-Halkalı Suburban Line Improvement: Construction Electromechanical Systems/Catenary Works Construction and Electrification Works

The “Catenary Works Construction and Electrification Works” project has been successfully completed under the contractor’s commitment. This included the installation and commissioning of 19 km of catenary systems and 12 stations between Halkalı and
Kazlıçeşme, covering 2 suburban lines and 1 high-speed train line, as well as 24.5 km and 16 stations between Ayrılıkçeşmesi and Pendik. All catenary systems across the Halkalı, Yenimahalle, and Maltepe station areas were fully tested, commissioned, and delivered on a turnkey basis, ensuring reliable and efficient operation throughout the entire project scope.