Mega Constructions Marmaray Project: Mega Constructions Marmaray Project, which is one of the most important projects in the world, is a place that does not pollute the environment by using high-capacity electrical energy in order to maintain the urban life of Istanbul in a healthy way, to provide a contemporary urban life and urban transportation opportunities to the citizens, and to preserve the natural historical features of the city. it is the project.
Istanbul is a city that needs to be protected with historical and cultural values, on the other hand, to reduce the environmental impact of public transportation systems and to establish modern railway facilities to increase the capacity, reliability and comfort of railway systems.
The project is located on the European side Halkalı is based on the construction of the railway subway system and the upgrading of the suburban rail system in Istanbul in order to connect the Gebze districts on the Asian side with a continuous, modern and high capacity suburban rail system.
The railway (Mega İnşaatlar Marmaray Project) lines on both sides of the Bosphorus will be connected to each other by a railway tunnel connection that will pass under the Bosphorus. The line will go underground in Kazlıçeşme; it will travel along Yenikapı and Sirkeci, which are new underground stations, pass under the Bosphorus, and connect to Üsküdar, another new underground station, and surface again in Söğütlüçeşme.
The project is currently one of the largest transport infrastructure projects in the world. The entire upgraded and new railway system will be approximately 76 km long. Main structures and systems, immersed tube tunnel, drilling tunnels, open-close tunnels, level structures, 3 new underground station, 36 aboveground station (renovation and improvement), operation control center, sites, workshops, maintenance facilities, to be built on the ground the existing lines, including a new third line, will include entirely new electrical and mechanical systems and the 4 section, which will cover the modern railway vehicles to be supplied.