Metro depot

The Sammalvuori consortium (Kalliorakennus-Yhtiöt Oy, EM Pekkinen Oy, Terrawise Oy and Aro-Systems Oy) is implementing the excavation and construction contract for the Sammalvuori metro depot. The excavation and construction contract was started in 2016 and will be completed in 2020.

Two underground halls are being constructed at the Sammalvuori depot – one for the night-time storage of 20 trains, the other for maintenance facilities. The maintenance hall is approximately 300 metres in length and wide enough to accommodate three trains and the required service space between them, for a total of roughly 25 metres. Technical facilities are also located at the northern end of the maintenance hall. The train storage hall is about 400 metres long and 26 metres wide.

Contact information for the Sammalvuori worksite:

On-duty worksite phone +358 (0)50 343 7233
Site Manager Paavo Kolehmainen, paavo.kolehmainen(at)
Worksite address: Nöykkiönkatu 4, 02320 Espoo (see photo)

Working hours as determined by the Finnish Environment Institute 

Extended noise permit for the Sammalvuori depot

Sammalvuori construction site contact information:

Hotline for the site: 050 343 7233
Site Manager Paavo Kolehmainen, paavo.kolehmainen(at)
Site address: Tyskaksenkaari 7, 02320 Espoo