When the western metro project was launched in 2009, Helsinki’s traffic policy was no longer defined by the needs of private motoring. According to the website of the City of Helsinki, a traffic system required by dense urban structure remains functional, when more and more journeys are made using effective and space-saving modes of travelling: on foot, by bicycle and by public transport. The city’s climate targets also support the current principles of traffic planning.
Traffic on the Ruoholahti–Matinkylä line started in November 2017. The stations on the line are functionally similar. On the platform level they are parallel to the track, 90 metres long, and at each end there are escalators and lifts for passengers to ascend to ground level. However, the objective was to achieve idiosyncratic stations that are distinctive from each other. That is why each station was given a specific, characteristic theme at the beginning of the design phase.
The Lauttasaari and Koivusaari stations resemble each other. In Lauttasaari the theme is snow and ice, in Koivusaari water and the sea. Both stations have illuminated glass walls as backgrounds to long escalators. In Lauttasaari they have a pack ice pattern, in Koivusaari a sea pattern. A night blue vault structure over the platform area is also a connecting factor.
The Lauttasaari station has two entrances. The entrance hall at the eastern end is located at a street corner beside a shopping mall. It is dominated by a glass cylinder, inside which a slanting lift and an escalator dive under the crossroads into the platform area. The cylinder is supported by a concrete mushroom column, which can be seen as a reminiscence of the old concrete water tower that was the landmark of Lauttasaari. In the western entrance hall the structures of the curved ceiling and walls are exposed. Made of light treated bent glulam wood, they compose a continuous column and beam construction. The roof extends all the way to the ground on the street side. The other exterior walls are mainly glass. The roof is covered with pre-patinated zinc sheet. Slate, a material typical of the 1950s, is used in a modern way, split and laid in horizontal position. The courtyard paving and massive stone walls are gabbro. The colours of the materials were chosen to suit the 1950s palette of Lauttasaari. The station features a light installation.
Further information on Helsinki Metro in Wikipedia and in Helsingin Sanomat 7.9.2017: Länsimetron upeat asemat lyövät 6–0 Helsingin vanhat asemat – enää ei puutu kuin metro (The stunning stations of the western metro beat Helsinki’s old stations 6–0 – only the metro is still lacking)