Engineering and consulting services in the design and construction of: Sofia Metro Extension Project – II diameter; Section: “Road junction Nadezhda  – Central Railway Station – Sveta Nedelya Sq – National Palace of Culture – Cherni vrah Blvd” from km 4 +140 to km 10 +495 -7 metro stations: II-5, II-6 with underground parking, II-7, II-8, II-9, II-10, II-11 with underground parking, reconstruction of existing infrastructure (2008-2012)

As a partner in the consortium “Systra – Infraproject Consult – Metrokonsult BG” – Consultant (Construction Supervision) “Infraproject consult” participates in the supervision of design and construction of the metro stations and adjacent metro sections, rail track and contact rail, transportation equipment, interior installations, dispatch systems, special low voltage systems, automatic billing system, escalators, lifts, shops, etc.