Replacement of Junatie metro bridge
The Junatie metro bridge between Kalasatama and Sörnäinen will be replaced between 2026 and 2028. It is estimated that this will require metro services between Kulosaari and Hakaniemi stations to be suspended for more than half a year in 2027.
The Junatie metro bridge between Kalasatama and Sörnäinen will be replaced between 2026 and 2028.
The project is currently in its planning phase. Preparatory construction work is planned to start in 2026. The metro service suspension will take place in 2027. The extent and exact duration of the suspension will be specified during further planning.
The construction of the new bridge will also require significant changes at Kalasatama metro station. The platforms of the station are partially built on top of the bridge that is to be replaced. This necessitates the dismantling of the platforms so that the bridge deck can be rebuilt.
The current estimate is that Kalasatama metro station will have to be closed not only for the duration of the metro service suspension, but also for approximately six months before and six months after it. During this period, metro trains will pass the station without stopping. The exact date of the closure will be specified as the planning progresses.
According to initial estimates, during the replacement of the bridge there will be no metro service at all on the section between Hakaniemi and Kulosaari.
HSL is planning a replacement bus service for the duration of the metro service suspension.
Suspending the metro service is necessary
The Junatie metro bridge is in need of replacement. The bridge was originally designed according to the design guidelines of the 1970s and no longer meets current load-bearing requirements.
Recent inspections have revealed deficiencies in the load-bearing capacity of the bridge. In winter 2025, the bridge was outfitted with temporary supports as a risk management measure to allow the metro service to continue safely.
The bridge is currently safe to use, but a decision has been made to bring its replacement forward. The aim is to ensure that the bridge does not have to be closed unexpectedly. The replacement will be carried out in a systematic way, and carefully planned replacement services will be provided during the metro service suspension.
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