The 4.5 km fourth phase of Kraków's fast tram network opened to passengers on September 26, after an inauguration ceremony the previous day. The extension runs from Wieczysta northwards to Mistrzejowice and is expected to cut journey times to the city centre by around 12 minutes while improving access to the Tauron Arena, one of Kraków's principal sports and entertainment venues.

What does the new line deliver?

The double-track extension is partly underground. A 1,230 m tunnel section carries two new underground stops, and the project removes a long-standing bottleneck at Polsadu roundabout through full grade separation. The city tram operator restructured its timetable so that routes 9, 12 and 16 run over the new infrastructure from the first day of service, with no break in operation during the changeover. Combined with the earlier phases, the line completes a continuous segregated corridor through the city centre and out to Mistrzejowice to the north.

Who financed and built the project?

Delivery took place through a 20-year public-private partnership concession awarded in 2020. When financing closed in late 2022, the European Bank for Reconstruction & Development described the deal as the first PPP in the Polish tram infrastructure sector.

The concessionaire is a consortium led by PPP Solutions Polska 2, a special purpose vehicle whose parent is Turkish engineering contractor Gülermak. The total contract is valued at 1.92bn złoty, covering design, financing, construction and long-term maintenance. Capital expenditure stands at about 616m złoty, with the balance covering lifecycle and service obligations across the 20-year concession.

What did construction involve?

The project required extensive utility diversion. Contractors relocated more than 330 km of telecommunications, electricity, water, sewerage, gas and district heating networks crossing the alignment. The 1,230 m tunnel section was built beneath an existing road corridor in a dense urban setting.

What service outcomes can passengers expect?

The 12-minute journey-time saving to the centre is the headline benefit. For Tauron Arena-bound passengers, the new stops replace longer bus or feeder-tram journeys from the eastern districts. The combination of tunnel and segregated junction should lift average commercial speeds on routes 9, 12 and 16, although the operator has not yet published measured end-to-end running times against the pre-opening baseline. Capacity on the corridor should also rise, since the new alignment removes the Polsadu roundabout as a source of delays and conflicts. The new line also serves residential districts north of the existing Wieczysta stop.

What changes for the operator?

Under the 20-year concession, the Gülermak-led PPP Solutions Polska 2 retains responsibility for the infrastructure, including track, tunnel and stop assets, while tram services continue to run over the line under municipal control. This separation of infrastructure risk from operations mirrors the PPP model now standard in Polish road and rail projects. Maintenance payments over the concession will dominate the long-term cost base for the city. For passengers, the contract structure has no immediate impact on fares or service branding, which remain under municipal control.

What comes next?

Kraków's tram development programme continues across the metropolitan area. The PPP model used for the Mistrzejowice line now offers a template for financing future extensions as the city pursues its long-term modal shift from private car to rail-based public transport.