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Qatar Rail has completed all tunnelling work on the Doha Metro with the final breakthrough having taken place at Terminal One of Hamad International Airport (HIA).
The first tunnel boring machines (TBMs) started the work in July 2014 and the final 111th km was crossed by TBM Msheireb on the southern part of Red Line of the landmark mega project.
The tunnelling milestone was achieved three months ahead of the deadline, thanks to the active deployment of 21 tunnel boring machines at the project site.
The overall completion of Doha Metro currently stands at 50 per cent and the first phase of the Doha Metro is likely to be completed in the next four years.
