The funding will be used to reconstruct the line along Kamenodelska Street and Tsar Boris III Boulevard, which is shared by five tram routes.
The grant will also support the acquisition of new low-floor LRVs and the upgrading of traffic management and passenger information systems.
The ERDF previously invested €34m from the EU’s 2007-2013 budget in the modernisation of Sofia’s 215km tram network.
