Sofia Approves €367M for Public Transport, Infrastructure Upgrade

Sofia, Bulgaria – On March 14, 2025, the Sofia Municipal Council greenlit a borrowing plan of up to €367 million (approximately $425 million) to overhaul the city’s aging public transport system and key road infrastructure. The decision, announced Thursday after a council vote, marks the largest single infrastructure financing package in the capital’s recent history.

The funds will be allocated primarily to renewing the bus and tram fleet – including the purchase of electric buses and low-floor trams – and to resurfacing major arterial roads and modernizing tram tracks across 12 districts. City officials estimate that roughly 60% of the loan will go toward rolling stock replacement, with the rest dedicated to civil works and signaling upgrades.

“This is not just about new buses. It’s about making Sofia a city where public transit is reliable, accessible, and environmentally friendly,” said Deputy Mayor for Transport Kiril Velchev in a press briefing. “The current fleet has an average age of 14 years, and maintenance costs have been climbing. Without this injection, we risk service breakdowns in the coming winters.”

Why a loan instead of EU grants? Sofia has tapped EU structural funds for previous upgrades, but the current Multiannual Financial Framework (2021–2027) allocates limited transport co-financing to Bulgaria. City officials say waiting for future tenders would delay critical work by at least three years. The council opted for a commercial loan from a consortium of Bulgarian and international banks, to be repaid over 15 years using a mix of municipal budget savings and farebox revenue.

Controversy and safeguards The decision wasn’t without debate. Opposition councilors warned that the debt service could consume up to 8% of Sofia’s annual operating budget, potentially crowding out social spending. The council responded by capping the interest rate at 3.5% and requiring quarterly progress reports. A reserve fund of €20 million is also being set aside in case of cost overruns.

Broader context Sofia’s transport woes mirror those of other Eastern European capitals that grew rapidly after EU accession but struggled to modernize Soviet-era infrastructure. A 2024 World Bank report ranked Sofia 112th globally for urban mobility, citing congestion costs equivalent to 1.8% of the city’s GDP. The loan package is part of a larger “Sofia 2030” master plan that includes a new metro line (Line 4) and 200km of bike lanes—though those projects remain in early design stages.

Local reactions The Sofia Transport Workers Union cautiously welcomed the fleet renewal, as it promises new jobs in maintenance and operations. However, the union noted that bus drivers’ wages have not kept pace with inflation, and called for a separate wage adjustment. Separately, the Sofia Air Alliance, an environmental NGO, praised the electric bus purchases but urged the council to also prioritize pedestrian zones and congestion pricing.

Financial details The loan will be drawn in three tranches: the first €120 million by June 2025, followed by €150 million in 2026 and the remainder in 2027. The delivery schedule envisions 200 new buses (of which 80 electric) and 50 trams by the end of 2026. Road upgrades are expected to begin on the “Tsarigradsko Shose” boulevard—one of the city’s most congested corridors—by September this year.

Observers note that the loan’s success will depend on project execution. Sofia municipality has a mixed record: several large infrastructure projects launched since 2020 have faced delays of 12 to 18 months due to contractor disputes and archaeological finds during excavation. To mitigate such risks, the council has included penalty clauses in tenders and established a dedicated project management office.

Next steps Final loan documentation is expected to be signed by April 2025, with the first bus deliveries slated for November. Sofia Mayor Vasil Terziev stated that the council will also explore a complementary “green bond” issuance later this year to attract private investment for energy-efficient buildings and LED street lighting upgrades.

The €367 million plan represents a bet on modernized public transport as a driver of economic competitiveness and quality of life. Whether the loan cures Sofia’s traffic headaches or creates new fiscal ones will become clearer as the first tranche is spent later this year.