Stage II of Line 3 — the section “Zhitnitsa Str. — Ovcha Kupel — Ring Road” is part of the phased construction of the line laid down in the General Spatial Plan and the short-term program of Sofia Municipality for the development of transport as part of the backbone of the transport and communication system of the city. The project covers the western part of the line and starts at the end of the underground section after MS 14 (the end of Stage I of Line 3 sections Vladimir Vazov Blvd. — TGC — Zhitnitsa Str., which is implemented from 5 January 2016 with a grant under OPTTI 2014-2020), passes through the Ovcha Kupel residential area and reaches MS 18, which is located below the Ring Road between Central Street and the Sofia-Pernik railway line. The project includes 4 underground stations and a metro line with a length of 3.8 km, most of which is underground, with the exception of the part of the route between MS 14 and MS 15, which will be on the estacade. Under MS 18 it is envisaged that a connection to the railway line and a railway stop will be built as part of the project. Thus, in the near future, the conditions for better integrated operation of the metro, road, rail and air transport systems are being created, which directly leads to an even more effective development of the priority of intermodality in passenger transport. The value of investments for the construction of Stage II of Line 3 is about EUR 103.4 million (excluding VAT) based on the public procurements carried out related to the implementation of this stage.The project will be built: metro route with a total length of 3.8 km, 4 metro stations and a railway station, which are equipped with systems for operation in parts: Electrical installations, Weak current systems, transport automation, Heating, ventilation and air conditioning, Water supply and drainage, Railroad, tracks, road and signal signs and Contact Network.