GRK Infra Oyj

The functions of the family business, founded by Armas Kallio in 1983, were even more streamlined in 2007 when GRK expanded its operations to infrastructure contracting. Gradually, it became the company’s main line of business. The growth rate accelerated in 2010 with the hiring of a group of highly experienced staff. Since 2010, many of them have also become GRK’s owners. The versatile services of GRK Infra Oyj, the GRK Group parent company, cover all aspects of infrastructure construction in Finland. GRK masters even the most demanding infrastructure technologies and manages contracts projects of all sizes – regardless of the type of contract. 

GRK Infra Oyj’s operating system is certified as a management system in accordance with ISO 9001, ISO 14001 and ISO 45001. We are also RALA-certified. More detailed information on the certificates and RALA qualifications can be found on the website of the Construction Quality Association Our operations comply with the Act on the Contractor’s Obligations and Liability when Work is Contracted Out and we require our suppliers to be part of Vastuu Group’s Reliable Partner service.



GRK has been selected to participate in the Hailuoto bridge and road project to improve Hailuoto’s accessibility


GRK’s financial statement release for …


Changes in GRK’s management team and E…

GRK Infra Oyj

Business ID



+358 10 321 4110



Juha Toimela


Jaakonkatu 2, 01620 Vantaa

Haikanvuori 8, 33960 Pirkkala

Kiilatie 1, 40320 Jyväskylä

Meiramitie 16, 90460 Oulunsalo

Seponkatu 8, 53300 Lappeenranta

Contact form

  • If you would like us to contact you, please insert your email here.
  • This field is for validation purposes and should be left unchanged.