Night-time testing of the West Metro’s safety systems in Matinkylä and Niittykumpu Mon–Tue and Tue–Wed, 4–6 November

An emergency shelter is currently being built in the Matinkylä metro station’s service tunnel. The construction of the emergency shelter also involves commissioning testing, during which the West Metro’s safety system will be tested during a fire alarm. The fire alarm will set off smoke extraction fans, for example. Testing cannot be carried out while the trains are running, it has to be carried out at night when traffic has ceased, between midnight and 4 a.m. The night-time tests will be carried out between Monday and Tuesday and Tuesday and Wednesday, 4–6 November. The tests will not affect metro traffic.

The West Metro has 52 technical systems of which the majority have to do with managing emergency situations. In connection with the construction of the emergency shelter, tests will be carried out to ensure that the systems will function also in adjacent facilities, i.e. the Matinkylä and Niittykumpu stations and the Tiistilä shaft. Read more about West Metro’s safety.

Testing addresses:
Matinkylä metro station, Suomenlahdentie 1, 02230 Espoo
Tiistilä shaft, Suomenlahdentie 15, 02230 Espoo
Niittykumpu metro station, Niittykatu 2, 02200 Espoo

When the smoke extraction fans are running, the tests may cause noise, which may carry to nearby houses. We apologise for any noise the tests may cause.

Further information:
Janne Ilkanheimo, electrical building services specialist, Länsimetro project, tel. +358 400 896 672, janne.ilkanheimo(at)

Summary of decisions 17 October 2019

The Board of Directors was presented with the monitoring of administrative and maintenance performance carried out by HKL on the Ruoholahti–Matinkylä section of the West Metro. HKL not only operates the metro traffic but also reports to Länsimetro Oy on the use of the metro line and the stations and the related servicing and maintenance tasks as agreed. The meeting addressed a risk report on the ownership and operational phase of phase one, Ruoholahti–Matinkylä.

The Board approved the updated co-operation agreement between HKL and Länsimetro Oy. The co-operation agreement concerns the metro system, rail line and stations owned by Länsimetro Oy on the Ruoholahti–Matinkylä section. The updated co-operation agreement replaces the agreement signed on 3 February 2017, and its appendices. The agreement will enter into force on 1 January 2020 and will be in effect until Länsimetro’s Matinkylä–Kivenlahti section begins operations.

The key changes to the agreement relate to improving cost transparency and a target-budget approach. Clear indicators have been defined for HKL’s key result areas, and the agreement’s cost structure has been simplified to improve the monitoring of the actual servicing and maintenance tasks carried out by HKL.

A status report on the construction of the Matinkylä–Kivenlahti section was presented to the Board. Construction of the Matinkylä–Kivenlahti section is progressing in line with the project plan’s schedule and budget. The Board was presented with the personnel changes that have taken place in the construction project.

The next Board meeting will be held on 21 November.

Further information:
Olli Isotalo, Chairman of the Board of Länsimetro Oy, tel. +358 (0)50 593 3359
Ville Saksi, CEO, Länsimetro Oy, tel. +358 (0)40 823 2086
Media contacts: Satu Linkola, Communications Director, tel. +358 (0)46 877 3392

Kivenlahti station to become part of densifying city – station construction on schedule

The construction of the West Metro’s Kivenlahti station is progressing on schedule and within budget. The extent of the area being built corresponds with the construction of a medium-sized shopping centre. Altogether 10,000 cubic metres of concrete will be cast during the contract.

In addition to element installations and in-situ concrete casting, the station construction project currently involves the building of heating, water and cooling trunk lines, the installation of fire hydrants, the installation of ventilation ducting and fire dampers, cable trays and lighting systems and cable laying work. Also the installation of massive smoke extraction fans has begun.

The Kivenlahti station construction contract began in June 2018. The contract includes the Kivenlahti metro station, service tunnel and the Kivenlahdentie and Kivenlahdentori entrances.

“The goal is to be able to seal off the above-ground structures by the end of the year so that the work can be continued regardless of weather conditions. We work closely with the city of Espoo in the construction of the area. The city is growing and developing around the metro,” says the Kivenlahti station’s Real Estate Development Manager Janne Nordström from the West Metro project.

Skanska is the main contractor for the Kivenlahti station. The contract currently employs around 140 employees who represent 12 different nationalities: in addition to Finns, the employees come from Estonia, Spain, Russia, Latvia, Lithuania and Kosovo, for example. Around half of the employees are Finns.

“Logistically, metro stations are demanding as the majority of the construction work takes place underground. Data models and prefabricated parts, in addition to in-situ casting, are used in the construction. This speeds up the construction schedule,” explains Petri Mälkiä, Project Manager at Skanska Infra Oy.

Along with the metro, other construction projects will start up in the area. The Kivenlahti Metro Centre will be located at the Kivenlahdentie entrance, i.e. the westernmost entrance, and will provide new services for the area. When metro traffic starts up, the Kivenlahdentie entrance will not yet be open to passengers due to other construction ongoing in the area. The entrance will be opened when the Kivenlahti Metro Centre and its services are inaugurated. A similar set-up has also been in place at the phase one Tapiola and Matinkylä stations. In Tapiola, the southern entrance was taken into use in spring 2019, and in Matinkylä, Länsimetro Oy is currently building the western entrance, which will be opened in 2020 when the Tynnyripuisto hotel and other construction is completed.

The “Kulkijat” (Wanderers) sculpture by the artist Kalle Mustonen will be placed in the Kivenlahti station, where it will serve as an iconic landmark. The sculpture consists of two wooden figures which are two and three metres tall. The piece serves as a contrast to the whiteness of the Kivenlahti station and Kivenlahti area. A naming competition will be organised for the figures at a later date.

Approximately 8,000 people currently live in Kivenlahti. The number of residents is expected to grow so that the population of Kivenlahti will be approximately 25,000 by 2050. The Kivenlahti metro station will be completed in 2022.

In the Matinkylä–Kivenlahti section of the West Metro project, seven kilometres of rail line and five new stations will be built, in addition to an underground metro depot in Sammalvuori.

Further information:

Janne Nordström, Real Estate Development Manager, West Metro project, tel. + 358 46 877 3872


Skanska Infra Oy, Project Manager, Petri Mälkiä, tel. +358 50 370 47 28 petri.malkia(at)

Satu Linkola, Communications Director, Länsimetro Oy, tel. +358 46 877 3392, satu.linkola(at)




Espoonlahti station’s light and sound installation tested out at Koivusaari metro station – “The trial was promising,” says the artist

Visual artist Hans Rosenström, who is creating a light and sound installation for the Espoonlahti metro station, has already tested out light and sound effects for his future artwork at the Koivusaari metro station. His aim was especially to see how light behaves on excavated rock surface.

“I had previously tested the projection of light onto the even ceiling of Helsinki’s Theatre Academy, but testing it out on an excavated rock surface is an entirely different matter,” says Rosenström.

Rosenström carried out his tests at night, examining both the intensity of light required for the installation and the height the light projectors should be set at in order to achieve the desired result. His finished installation will represent shadows on the water, inspired by the swimming-hall-themed architecture of the Espoonlahti metro station.

“The angle of reflection, for example, affects the outcome. The testing was successful, and now I know where I should go with the installation. I still need to carry out new tests before the installation is brought to the station, but this test proves that the idea works,” says Rosenström.

His installation will also include sound – he is collaborating with singers, and the final installation will include sound showers, which commuters will only be able to hear if they are standing in a certain area of the metro platform.

Some regular speakers will also be used to project sound slightly further in the station if necessary.

“In the Koivusaari test, I also wanted to know how much sound echoes in the space, and it was surprisingly clear. There will be no loud sounds at any point in the installation; the end result will be a rising and falling soundscape. It will be important to find an interesting balance between sound, silence and space,” says Rosenström.

The aim is to create, together with singers, an extended recording that will be programmed to start at a different time every day to ensure that, for example, commuters in 8 a.m. rush hour will not always hear the same part of the recording every day.

“The final installation, including lights and sounds, will only be installed at the Espoonlahti station’s platform once the station is completed, but the testing provides a concrete dimension for realising the installation, which will also be shaped based on the tests,” says Rosenström.

Hans Rosenström


 ALA Architects/Hans Rosenström

Phase II of Länsimetro proceeding on schedule and on budget

Construction of phase II of the West Metro project, from Matinkylä to Kivenlahti, is proceeding according to plan. In March 2018, the City of Espoo reviewed the project plan for phase II that it had drawn up in 2012. The adjusted cost estimate for the project is EUR 1,159 million. The aim is to hand over the seven-kilometre section of rail line and the five stations and depot to the operator, Helsinki City Transport (HKL), in 2023.

Six construction contracts are currently under way: five station contracts and the construction contract for the entire rail line. Technical building services have already started at the Sammalvuori depot, and the depot will be completed in 2020. In the construction contracts, the work is now moving from concrete work and the installation of prefabricated elements to work on technical building services and system installations.

The construction contracts are being implemented as so-called project management contracts, the scope of which is similar to the construction of a mid-sized shopping centre. In addition, the project includes 26 subcontracts, with estimated sizes ranging from one million to more than 10 million euros.

The integrated project organisation that is building the West Metro moved to shared premises in Olari, Espoo, in spring 2017. The project’s key players and the reinforced organisation operate under one roof: authorities, planning, construction, finance, quality and risk management, as well as representatives from metro operator HKL, rescue services and the City of Espoo.

In compiling the project organisation for phase II, the experiences gained from the construction of phase I have been taken into account with great precision under the lead of CEO Ville Saksi.

“Even by European standards, the West Metro is a major project, combining infrastructure construction, building construction, technical buildings services expertise and automation. Our goal is to build a metro system that is in line with the project plan and which is assuredly one of the safest in the world. It is of the utmost importance to us to openly communicate on our progress,” states Länsimetro Oy’s CEO, Ville Saksi.

The phase II section of the metro will include five new stations: Finnoo, Kaitaa, Soukka, Espoonlahti and Kivenlahti. An underground metro depot for the needs of metro traffic operator HKL is being built at Sammalvuori.

Further information:
Ville Saksi, CEO, Länsimetro Oy, ville.saksi(at)



Summary of decisions by Länsimetro Oy’s Board of Directors on 19 September 2019

A status report on the construction of the Matinkylä–Kivenlahti section was presented to the Board. Construction of the Matinkylä–Kivenlahti section is progressing in line with the project plan’s schedule and budget.

Länsimetro’s public image during Q1 and Q2 and the communication activities for the rest of the year were presented to the Board.

The next meeting will be held on 17 October 2019 at the Finnoo metro station.

Further information:
Olli Isotalo, Chairman of the Board of Länsimetro Oy, tel. +358 (0)50 593 3359
Ville Saksi, CEO, Länsimetro Oy, tel. +358 (0)40 823 2086
Media contacts: Satu Linkola, Communications Director, tel. +358 (0)46 877 3392



Construction of the Yläkartanonkuja technical shaft has begun

Construction of the Yläkartanonkuja technical shaft has begun as part of Länsimetro’s Soukka metro station construction contract. When the metro is completed, the technical shaft will serve as the smoke extraction, pressure equalisation and ventilation system.

Construction of the shaft has begun with the excavation of the foundation, and rock drilling and bolting. The work will continue with concrete construction work, after which steel structures will be built inside the shaft. The final work will involve roof work and exterior cladding.

Due to the work site arrangements, the bicycle/pedestrian lane on the south side, in the Yläkartanontie direction, will be closed. Traffic will be diverted to the north side of Yläkartanontie (see map). Work in the area of the shaft, as well as the traffic arrangements, will last until the end of July 2021.

The construction work will be carried out from Monday to Friday, between 7.00 am and 6.00 pm.

We apologise for any inconvenience caused by the work.

Further information:

YIT–ARE consortium on-call phone line (24/7): +358 (0)40 829 7938
Länsimetro’s on-call phone line (Mon–Fri, 9 am to 3 pm): +358 (0)50 377 3700


Exceptional traffic arrangements on the Merivirta side of Länsimetro’s Kivenlahti construction contract

Exceptional traffic arrangements on the Merivirta side of the Kivenlahti metro station can be expected from the week of 9 September until the week of 23 September (weeks 37–39). The changes are due to the connection of Seitsenmerenreitti’s water supply lines to the water and sewer lines situated under Merivirta.

Due to the changes, one of the driving lanes on the Merivirta side of the metro station is closed. The crosswalk with traffic lights has also been taken out of use, and a replacement crosswalk has been set up a bit further away.

The temporary traffic arrangements will be removed at the latest at the start of the week of 23 September (week 39). After that, parts of the road and bicycle/pedestrian path will be repaved with asphalt, causing only minor disturbances to traffic. We apologise for any inconvenience caused by the work.

Further information:

On-call phone line, Skanska Infra Oy: +358 (0)50 402 3044
Länsimetro’s feedback line (Mon–Fri, 9 am to 3 pm): +358 (0)50 377 3700

Espoonlahti wins first Safest Metro Worksite competition of 2019 – “Safety work never ends”

The first Safest Metro Worksite competition of 2019 has been won by Länsimetro’s Espoonlahti worksite, whose project management contractor is SRV.

Safest Metro Worksite is Länsimetro’s own work safety competition and the winner is selected from among the ongoing metro station contracts every six months.

“Of course it feels good to receive this recognition, but it’s important to remember that the award belongs to the entire worksite,” says Jonne Juutilainen, SRV’s OHS Manager for the Espoonlahti project.

Starting in 2019, new criteria have been used in the Safest Metro Worksite competition. Six areas are taken into account: the results of MVR/TR indicators, safety observations that lead to measures, near-miss situations, accidents, environmental damage and property damage.

“What’s new is the major role that safety observations play in the competition. By making safety observations, we try to prevent accidents. The observations also lead to issues being addressed – observations are reported in the electronic system and only safety observations that have been marked as taken care of are included in the competition results,” says Susanna Laukkanen, Länsimetro’s Risk and Safety Manager.

The Espoonlahti worksite gained the most points in the competition in terms of MVR and TR indicators. The Espoonlahti worksite also made the most safety observations that led to follow-up measures, altogether 314.

“At the entire SRV level, the goal is to make at least 25 safety observations at the worksite per month. We are also part of the Zero Accident Forum through SRV, the goal of which is to reach the zero-accident goal by 2020,” explains Juutilainen.

“It was great to see that the project management contract also focusses on safety and considers it to be important,” says Laukkanen.

“There’s always something to improve, however. Just because we won doesn’t mean that the safety work will end,” Juutilainen points out.

The Soukka worksite also did well in the competition – it made 263 safety observations during the competition period and no accidents leading to injury took place at the worksite during the period.

The second Safest Metro Worksite competition period for 2019 is from July to December.

*The MVR indicator is used for observing both safety issues that are in order and those in need of improvement. The TR indicator is a method for measuring the safety of building construction sites.

District heating routes to be built at Kivenlahti metro station: traffic arrangements in surrounding area

The construction of district heating is starting up on the West Metro’s Kivenlahti contract, at the entrance to the metro station on Kivenlahdentie. The work will begin in the week starting on 23 September and it is expected to be completed by the end of October.

The district heating route will be dug underneath the pedestrian and bike path at the intersection of Lainepolku and Kivenlahdentie. The pedestrian and bike path will remain open during the work as ramps will be installed for the duration.

The work will be carried out by Fortum’s subcontractor, which will also take care of traffic arrangements while the work continues.

Further information:

On-call phone line, Skanska Infra Oy: +358 (0)50 402 3044
Länsimetro’s feedback line (Mon–Fri, 9 am to 3 pm): +358 (0) 50 377 3700