Construction work at metro worksites over Easter

Quiet construction work phases will be continuing at all of Länsimetro’s Matinkylä–Kivenlahti section worksites over Easter. Construction work at the metro worksites will be carried out over Easter (10 Apr–13 Apr 2020) during the working hours specified by the Finnish Environment Institute.

  • 7 a.m. to 10 p.m., quiet construction work
  • 9 a.m. to 6 p.m., work that may cause noise momentarily

“There are also employees from outside Finland, especially Estonia, working on our construction projects. Due to the travel restrictions, these employees cannot travel to their home countries for the holidays and return after Easter, so it makes more sense for them to work at the worksite and speed up the project’s progress,” says Länsimetro’s CEO Ville Saksi on the impacts of the period of emergency on the Matinkylä–Kivenlahti section’s construction.

At the West Metro’s second phase Matinkylä–Kivenlahti worksites, work is currently proceeding according to schedule. The Sammalvuori depot has moved on to the testing phase. HVAC and electrical work is being performed at the five stations and on the 7.5-km rail line, and the installation of the West Metro’s over 50 different systems is underway.

Worksite contractors and direct phone lines to the worksites

  • Finnoo: GRK Infra Oy’s and Aki Hyrkkönen Oy’s consortium, tel. +358 (0)50 516 7606
  • Kaitaa: YIT Rakennus Oy’s and Are Oy’s consortium, tel. +358 (0)50 539 3208
  • Soukka: YIT Rakennus Oy’s and Are Oy’s consortium, tel. +358 (0)40 628 8161
  • Espoonlahti: SRV Rakennus Oy, tel. +358 (0)40 637 5377
  • Kivenlahti: Skanska Infra Oy, tel. +358 (0)50 402 3044

You can also give feedback to Länsimetro using an online form.


Länsimetro wishes everyone a relaxing Easter.



Länsimetron Matinkylä-Kivenlahti -osuuden kaikilla työmailla tehdään rakentamiseen kuuluvia hiljaisia työvaiheita pääsiäisen aikaan. Rakennustöitä metrotyömailla tehdään pääsiäisenä (10.4.–13.4.2020) ympäristökeskuksen määritteleminä työaikoina:

  • klo 7–22 hiljaisia rakennustöitä
  • klo 9–18 töitä, joista saattaa kuulua hetkittäistä melua

”Rakennusurakoissamme on työntekijöitä myös Suomen ulkopuolelta, erityisesti Virosta. Matkustusrajoitteiden takia nämä työntekijät eivät voi matkustaa kotimaahansa pyhien ajaksi ja palata pääsiäisen jälkeen takaisin, jolloin mielekkäämpää on tehdä töitä työmaalla ja edistää siten hankkeen etenemistä”, kertoo Länsimetron toimitusjohtaja Ville Saksi poikkeusajan vaikutuksista Matinkylä-Kivenlahti -osuuden rakentamiseen.

Länsimetron kakkosvaiheen Matinkylä-Kivenlahti työmailla työt etenevät tällä hetkellä aikataulussa. Sammalvuoren varikolla on siirrytty testausvaiheeseen. Viidellä asematyömaalla ja 7,5 km ratalinjalla on käynnissä talotekniset työt eli sähkö- ja LVI-asennukset sekä länsimetron yli 50 eri järjestelmän asennukset. Töiden etenemistä muutamien keskeisten järjestelmien osalta voi seurata Länsimetron rakentamisen sivulta.

Työmaiden urakoitsijat ja 24/7-puhelinnumerot:

  • Finnoo: GRK Infra Oy:nja Aki Hyrkkönen Oy:n työyhteenliittymä, puh. 050 516 7606
  • Kaitaa: YIT Rakennus Oy:n ja Are Oy:n työyhteenliittymä, puh. 050 539 3208
  • Soukka: YIT Rakennus Oy:n ja Are Oy:n työyhteenliittymä, puh. 040 628 8161
  • Espoonlahti: SRV Rakennus Oy, puh. 040 637 5377
  • Kivenlahti: Skanska Infra Oy, puh. 050 402 3044
  • Ratalinja: GRK Infra Oy: puh. 050 516 7606

Voit jättää palautetta Länsimetrolle myös verkkolomakkeella.


Länsimetro toivottaa rauhallista pääsiäisen aikaa.

Summary of Länsimetro’s meeting of the Board of Directors on 26 March 2020

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

The Board was presented with Länsimetro’s measures in the project concerning the coronavirus epidemic. For now, construction work continues on the Matinkylä-Kivenlahti section as planned. Länsimetro Oy continuously monitors, in particular, the guidelines of the City of Espoo, the national government and other stakeholders. Shared recommendations concerning big room personnel have been given and the majority of the project’s personnel have transferred to remote work. Länsimetro Oy highlights each employee’s responsibility for the progress of the project and work in these exceptional circumstances.

The Board approved the company’s 2019 financial statements. The entire financial statements will be presented as part of Espoo’s consolidated reporting.

The Board approved the procurement decision for points for the Matinkylä-Kivenlahti project. The points will be acquired from Vossloh Cofiger Finland Oy. The points are a key part of the switch and turn the switch on the track. The points are attached to the switch, after which the switch is brought to the worksite in one piece. The type of point in question is currently in use on the old metro line and on Länsimetro’s Ruoholahti-Matinkylä section. The installation is carried out by the superstructures contractor. The value of the contract is EUR 890,000 million.

A report on the platform-level floor repairs at the Koivusaari metro station was given to the Board.

The next meeting of the Board of Directors will be held on 23 April 2020.

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


Preparing for the coronavirus (COVID-19)

At Länsimetro Oy and the Matinkylä-Kivenlahti project, we are closely monitoring the coronavirus guidelines and recommendations issued by authorities and we have drawn up instructions concerning our operations in accordance with the official guidelines. At our construction worksites, operations are conducted in good collaboration as instructed by each responsible contractor.

The situation is new and exceptional for all of us. It is important now to follow instructions and behave responsibly.

Work on the second phase of the West Metro, the Matinkylä-Kivenlahti section, is currently progressing according to schedule. The Sammalvuori depot has moved on to the testing phase. HVAC and electrical work is being performed at the five stations and on the 7.5-km rail line, and the installation of the West Metro’s over 50 different systems is underway.

Work on the Matinkylä station’s western entrance is also progressing.  The entrance is scheduled for completion at the end of this year.




Sneak peek at a metro worksite: installation of standby generators

Haulage of the first standby generators to the metro stations of the Matinkylä–Kivenlahti section has begun. The first standby generator was hauled to the Kaitaa station on Tuesday, 25 February, and the second one to the Espoonlahti station at the end of the same week. Here we take a look at the haulage of Espoonlahti’s standby generator. 

Every new metro station as well as the Sammalvuori depot will receive a standby generator. A total of six standby generators will be installed in the Matinkylä–Kivenlahti section. The standby generator will start up automatically after a few seconds if the transformers serving the station’s HVAC and electricity lose power due to a defect or, for instance, a nationwide power outage. The standby generators have a rated power of 500 kilowatts. This capacity is sufficient to maintain the key safety functions of a metro station, such as lighting, the PA system, the evacuation elevator and access control. The standby generator ensures the metro station’s safe operation in the event of a power outage and people’s safe exit from the station. The supplier of the standby generators for Länsimetro’s Matinkylä–Kivenlahti section is the Geneset consortium – Geneset Powerplants Oy and Hautalan Sähkömoottori Oy.

Before the standby generators are delivered for installation in the new metro stations, the operation of the overall machinery is inspected in a Factory Acceptance Test (FAT test).

We previously had a sneak peek at how the escalators are installed (in Finnish)– for commuters, escalators are a visible and familiar part of metro stations. Standby generators, on the other hand, are placed out of commuters’ sight. The spaces that are visible to commuters, such as the metro platform and escalators, only make up about one third of all of a metro station’s premises: two thirds are hidden from view.

The size of the standby generator is approximately 3.9 metres X 1.6 metres X 2.6 metres (length x width x height), and it weighs some 4,500 kilograms. The standby generator ensures the metro station’s safe operation in the event of a power outage and people’s safe exit from the station.

The standby generator is brought underground in one piece – unlike, e.g., escalators, which are brought underground in multiple pieces and then assembled. The standby generator is delivered through the service tunnel and the future rail line to the vicinity of the installation spot, from where it is lifted into place using lifting equipment. Once in its final place, the protective plastic is removed from the generator and it is set up for operation.

The installation of standby generators is one of 30 subcontracts that are carried out on the entire rail line. Others are escalators, elevators, smoke extraction fans and camera surveillance, to name a few.

Summary of Länsimetro’s meeting of the Board of Directors on 27 February 2020

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

The Technical Director presented the commissioning plan for the Matinkylä–Kivenlahti section. The commissioning phase of the depot has begun.

The construction status for park and ride facilities and bicycle parking for the Matinkylä-Kivenlahti section was presented to the Board. According to a decision by the Espoo City Board, the 1,300 park and ride spaces in the West Metro’s extension will be implemented as follows:

  • 700 spaces in Kivenlahti
  • 250 spaces in Espoonlahti
  • 50 spaces in Soukka
  • 50 spaces in Kaitaa
  • 250 spaces in Finnoo

The total number of parking spaces will be reduced by 300 altogether. The freed-up resources will be allocated to implementing high-quality bicycle parking.

A review has been carried out of the possibility of adding park and ride spaces for bicycles along the West Metro, and design guidelines for the bicycle park and ride facilities have been drawn up by the City of Espoo. Länsimetro will build at least the bicycle parking spaces specified in the project plan and carry out quantitative and qualitative improvements where viable for the entire Espoo section.

The first environmental statement for the Matinkylä–Kivenlahti section was presented to the Board.

The Board authorised the CFO or a representative appointed by him to launch a tender process for and conclude an agreement on financing up to a maximum of EUR 100 million in one loan or up to a maximum of EUR 640 million in several loans. The tender for financing will be carried out jointly with the City of Espoo’s finance department.

The 2019 financial statements were presented to the Board. The entire financial statements will be presented as part of Espoo’s consolidated reporting.

The Board was presented a status report on the repair work on the floor of the Koivusaari metro station’s platform level, which will take place in the summer.  A status report on the water damage that occurred at Keilaniemi on the night between the 30th and 31st of January was given to the Board.

The next meeting of the Board of Directors will be held on 26 March 2020.

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

Urheilupuisto metro station’s new eastern entrance opens on the weekend

The Urheilupuisto metro station’s eastern entrance opened to passengers on Saturday, 29 February 2020. The Urheilupuisto station was designed and built to operate with a single main entrance. Länsimetro Oy wishes to develop the passenger experience at its eight metro stations. Based on feedback, the emergency exit of the Jousenpuisto parking facility was converted into a second entrance for the Urheilupuisto station. This will facilitate passengers’ journey in the Jousenpuisto direction.

Passengers will be able to use the western entrance as usual. The new entrance is accessible, as are all of the entrances to the West Metro stations. The new entrance was assigned the identifier C on HSL’s signs.


The construction of the new entrance entailed structural changes required by authorities at the entrance itself and technical changes to the metro’s systems. The changes were carefully planned and implemented so that the converted entrance is practical and safe and the systems operate together with the metro’s systems. During construction, the safety requirements of the operating metro were also observed.

Read more about the Urheilupuisto metro station


Espoonlahti wins Safest Metro Worksite competition for the second time

The Safest Metro Worksite competition is Länsimetro’s own occupational safety competition that encourages worksites to take a preventive approach to their work and to continuously improve safety. The goal is zero accidents.

For the second time in a row, the winner of the competition is Länsimetro’s Espoonlahti worksite, whose project management contractor is SRV. Länsimetro’s occupational safety competition awards the safest worksite of all the active metro construction contracts. As the developer, Länsimetro wants to focus attention on safety and encourage contractors to develop an occupational safety culture that targets zero accidents. The award is given twice a year.

“Winning doesn’t come down to one or two people – it takes a group effort by everyone at the worksite, and the award belongs to everyone working on the project in question. People give 100% to work safety every day following the example set by Site Manager Jussi Lahti,” says SRV’s OHS Manager for the Espoonlahti project, Jonne Juutilainen.

Targeting zero accidents – no slacking off in work safety

“With the Safest Metro Worksite competition, Länsimetro encourages construction sites to pay attention to safety by taking a preventive approach and applying corrective measures to avoid accidents. The goal is zero accidents,” Länsimetro’s Risk and Safety Manager, Susanna Laukkanen, sums up.

In the competition, six occupational safety areas are taken into account. These are MVR/TR indicators*, safety observations that lead to measures, near-miss situations, accidents, environmental damage and property damage.

The Espoonlahti worksite gained the most points in the competition in terms of MVR and TR indicators. The worksite also made the most safety observations that led to follow-up measures, altogether 793. In the previous competition round, Espoonlahti had 314 observations. The rail line worksite also made a large number of safety observations leading to measures: 685 observations.

Following the previous win, safety at the Espoonlahti worksite has been improved, for example, by increasing alarm systems at the site and developing practices for logging and rectifying safety observations.

“We work hard every day and make no compromises to ensure the safety of the Espoonlahti worksite. The aim is to approach every task by first thinking about how it can be done safely. Everyone is obligated to work together to ensure occupational safety. Right from the start, SRV’s worksite has had a clear policy on the ways of working and ground rules – no one, not contractors or anyone else, is cut any slack in occupational safety. Everyone must commit to the set guidelines, plans and use of safety gear, and report any safety deficiencies,” stresses Juutilainen.

*MVR, known by its Finnish acronym, is an observation-based method for civil engineering measurements to ensure an acceptable level of safety at an earth and water construction worksite. The MVR measurement is used for observing both safety issues that are in order and those in need of improvement. The TR measurement is a method for measuring the safety of building construction sites. The safety measurement focuses on the correct issues, and the positive feedback provides motivation to develop work methods.

Rail line wins Länsimetro’s first Co-operation Award

The new award is given to Länsimetro’s worksites twice a year as a testament to co-operation skills. In a construction project of the West Metro’s magnitude, co-operation and interaction between the various players is highlighted.

The Co-operation Award is Länsimetro’s own perpetual trophy that is awarded twice a year to a winner selected from its own active worksites. The first winner of the award is the rail line worksite, which is building seven kilometres of rail line, seven shafts and 32 connecting tunnels along the Matinkylä–Kivenlahti section. Learn more about the rail line

“A construction project of the West Metro’s magnitude highlights co-operation and interaction between the various players. We want to measure co-operation and trust in every construction contract and address potential obstacles to co-operation as early as possible before they pose problems for the progress of the project,” says Jaakko Naamanka, Project Manager on the Matinkylä–Kivenlahti project.

Common spaces ensure good communication and reinforce team spirit

The award is given twice a year to a winner selected from Länsimetro’s own active worksites. The objective is to continuously improve co-operation and trust. Länsimetro measures the smoothness of co-operation on its worksites four times a year using a questionnaire that is integrated in the project management model. Measurements have been made since June 2018 as the construction contracts have started up. All parties involved in the construction answer the questionnaire. The respondents give a numerical grade, as well as open-ended comments on various themes. The Celkee Insight service is used for the measurement, which provides information on communication, co-operation, trust and professional pride. The criteria for the award are, in addition to the average score given to the themes in the survey, the positive development of the worksite’s results, the response rate for each respondent group and the number of comments.

The rail line’s average score for the themes measured in the questionnaire was high. Communication and co-operation in the rail line project have developed positively throughout the measurement period. In addition, the rail line’s respondents were eager to comment. The response rate for the rail line was relatively good, at 60%.

“Our worksites follow a genuine Big Room approach: we work together in shared spaces. Communication flows better without unnecessary doors, and email discussions can be avoided simply by taking a few steps to talk to someone. When information flows, it’s easier to aim for the same target,” says Construction Manager Jenni Matikka, offering an example of good co-operation practices on a worksite.

Read more

First environmental statement for Länsimetro’s Matinkylä–Kivenlahti project completed

In an environmental statement on the Matinkylä–Kivenlahti project, Länsimetro has determined the environmental impacts of the excavation and construction of the metro tunnels and five metro stations (Finnoo, Kaitaa, Soukka, Espoonlahti, Kivenlahti), as well as the Sammalvuori depot, in 2014–2019.

To assess environmental impacts, we monitor the impacts of construction on the groundwater, ground settling, water level and soil, and we monitor water consumption and wastewater processing during construction, taking biodiversity into account and paying attention to dust and noise caused by the work sites.

The excavation contracts started up in 2014 and ended in 2018. Construction of the metro continued with construction contracts covering the stations and the rail tunnel, and these will continue until 2023.

The following is reported on in the environmental statement covering the 2014–2019 excavation and construction phase:

  • Consumption of main materials: explosives, chemicals, fuels, concrete
  • Energy consumption
  • Carbon footprint
  • Generation and utilisation of aggregates
  • Generation and processing of waste
  • Impacts on groundwater, ground settling, water level and soil
  • Water consumption and wastewater
  • Biodiversity
  • Dust
  • Noise
  • Stakeholders and dialogue, feedback, environmental requirements

As the developer, Länsimetro encourages material efficiency

Länsimetro, as the developer, can have an influence by encouraging contractors to be efficient in their use of materials. Material efficiency in construction saves natural resources and reduces waste, in turn, also mitigating the construction site’s carbon dioxide emissions. Some examples are using data modelling when designing the station and careful planning of the work phases and material purchases, which helps avoid ordering excess materials and storing them on the work site.

Construction volumes are reflected in, for instance, the number of rock-reinforcing bolts used during the excavation phase. Tunnels are reinforced at the stations using roughly six-metre-long bolts that are drilled into the rock. Based on the excavation contractors’ information, an average of 100 km of rock-reinforcing bolts were installed in the stations per excavation contract. With the average length of one bolt being six metres, the total length corresponds roughly to the distance between Helsinki’s main railway station and Hämeenlinna’s city centre.

The environmental statement also contains an assessment of the environmental impacts of blast-rock haulage. The total haulage distance for all the two-way haulages in the station and tunnel excavation contracts amounts to approximately 10,664,900 kilometres. This is the equivalent of around 267 times around the world.

72% of the carbon footprint comes from construction materials

The environmental statement also reveals that by the end of 2019, the majority (72%) of the carbon footprint of the entire Matinkylä–Kivenlahti project was made up of materials, followed by rock-blast and waste haulage (13%) and fuels (9%). By the end of 2019, roughly half of the entire project’s carbon footprint arose during the excavation phase and half during the construction phase. The total carbon dioxide emissions from excavation and construction amounted to 90,800 tCO2 by the end of 2019.

Groundwater monitored, flying squirrels taken into account

The findings of the environmental statement also indicate that the project’s construction work has had no noticeable impact on the quality of water in the groundwater pipes. In many places, the changes in the ground-settling monitoring points of buildings remained below the measurement inaccuracy. No changes deviating from the natural situation have been observed in the water level of Hannusjärvi Lake.

Near the rail line, the Finnoo area, the Kaitaa area and the Espoonlahti–Soukka area have been identified as core flying squirrel habitat areas. The core flying squirrel areas have been taken into account in the metro station planning, and flying squirrel habitats have not been endangered. The area’s metro shafts have been situated to cause as little disturbance as possible to flying squirrel habitats. The main routes of flying squirrels, i.e. treetop connections, have been retained.

Stakeholders a key part of the project

Stakeholder work has been and continues to be an important part of the Matinkylä–Kivenlahti project. The most important stakeholders from an environmental sustainability perspective are the construction area’s nearby residents, businesses and other operators, builders, policy-makers and the owner, the authorities and the personnel working on the project.

Feedback on the Matinkylä–Kivenlahti project can be given by phone or via the feedback form on the website. All feedback is addressed and responded to. Measures have been taken based on the feedback, for instance, possible damage has been investigated, the cleaning of work-site roads has been stepped up, and direction has been given to work-site operations as required based on noise complaints.

The environmental statement will be updated in 2020–2023.

Read the environmental statement (in Finnish, PDF )

Further information:

Kati Vesikallio, Environmental Manager, email kati.vesikallio(at)

West Metro stations win Lighting Design of the Year for 2019

Länsimetro’s metro stations have been awarded for their lighting for the third time now. In addition to winning the title of Lighting Design of the Year for 2019, the eight metro stations of phase II also received two other esteemed international awards – Lighting Design Awards: Highly Commended, and LIT Awards: Winner

Tapiolan asema
The Tapiola metro station is a prime example of the smooth integration of light and architecture. 

The West Metro stations won in the interior illumination category of the Lighting Design of 2019 competition.

The lighting in the public spaces of the eight metro stations that are part of phase I of the West Metro (i.e. Lauttasaari, Koivusaari, Keilaniemi, Aalto University, Urheilupuisto, Niittykumpu and Matinkylä) was designed by VALOA design. The overall architectural integration was headed by CJN Architects, and the architecture of the stations was designed by Helin & Co, ALA Architects + Esa Piironen, APRT Architects and HKP Architects. The electrical engineering was executed by Tauno Nissinen Ltd., and the electrical contractor was Are. The light art for the stations was provided by Tommi Grönlund and Petteri Nissinen (Keilaniemi station), and Lighting Design Collective and Helin & Co (Lauttasaari station).

Architecture, art and design create the metro stations’ identity

The competition assesses, among other things, the intended use of the site and lighting that supports the overall architectural solution. The aim for the lighting was to enhance commuters’ enjoyment of the spaces, and to fit in seamlessly with their surroundings.

“The key of the West Metro stations’ lighting solution is the integration of light and architecture as a coherent entirety. Each station has its own identity which is formed from the combination of architecture, art, and light. The role of lighting has been considered diversely, and the solution is subdued, but also architecturally high-quality and functioning in commuters’ everyday lives. The high-quality visual impact is created by the repetitive lighting styles, non-glare, sufficient light levels and the integration of the lighting,” says VALOA design’s CEO Roope Siiroinen, who was the lighting designer for the metro stations.

“The architectural lighting solutions used in the Helsinki metro stations are a refreshing exception to the usual metro station lighting. The high-quality environment makes passengers feel that the design not only aims for functionality, but also to increase their comfort,” said the jury on its selection of West Metro as the 2019 winner in the interior illumination category.

In granting the awards, compliance with the requirements set for modern lighting technology and the creative application of technical solutions, as well as financial and ecological factors, were also taken into account. Read more about the 2019 Lighting Design competition. (in Finnish)

The winners were announced on Wednesday, 5 February, at the Sähkö Valo Tele AV exhibition in Jyväskylä. As a competition winner, the West Metro’s lighting will take part in the Nordic Lighting Design Awards competition. The Finnish Lighting Awards competition is organised by the Illuminating Engineering Society (IES) of Finland once every two years, and awards are given for both interior and exterior lighting. The competition shines a spotlight on Finnish lighting designers and developers and commendably realised lighting projects.

Read about all of the West Metro stations.