- By the end of March 2011, the two TBMs had constructed a total of 8,850 meters of ready tunnel (single track).
- The archaeological excavation in the areas of VENIZELOU, AGHIAS SOFIAS and SYNTRIVANI stations is in progress.
- The construction of the foundation slab at EFKLIDIS station is completed and the works of the construction of the rolling floor for the two TBMs are in progress.
- The installation of the waterproofing system as well as the backfilling of the north roof slab are completed at FLEMING station.
