||The ‘Real cost’ values have been adjusted for inflation and PPP.
Sections of the line constructed in trench are represented with the same line style as the at-grade sections.
The project maps are based on information retrieved from OpenStreetMap and our research. Please contact us if you have more accurate information regarding this project.
* Sources disagree on 3 vs. 4 but the map clearly shows 4: https://www.metropolitan.bg/en/op-transport-extension/istoriya-razvitie-metro/line-3-sofia-metro