The ArRiyadh New Mobility (ANM) consortium has started tunnelling on the Orange Line (Line 3) of the Riyadh Metro in Saudi Arabia.
The tunnel boring machine (TBM), named Jazlah, was officially launched by Prince Faisal bin Bandar, governor of Riyadh.
Jazlah, 10m in diameter and weighing approximately 700t, started boring on the 5.8km tunnel in the downtown area of Riyadh and will pass through the Riyadh main train station.
The €3.7bn (£2.6bn) project will see the 41.2km line become the longest of the Riyadh Metro network.
The route is mostly elevated along the western part of Al-Madinah Al-Munawwarah Road, then underground in bored and mined tunnels in the central section of the line, and generally at grade along Prince Saad Ibn Abdulrahman Road in the east.
The ANM consortium is led by Salini Impregilo and includes Ansaldo STS, Larsen & Toubro, Nesma and Bombardier.
Earlier this week it was announced that the BACS consortium had commenced tunnelling on the Riyadh Metro’s Blue Line.