As of February 1, 2018, Lemminkäinen Oyj was acquired by YIT Oyj. Lemminkäinen Oyj provides infrastructure and building construction services primarily in Finland, other Nordic countries, Russia, and the Baltic countries. The company engages in the construction of asphalt and paving, mineral aggregates, and post-tensioned structures, provision of waterproofing services, crushing, screening, and quarrying of mineral aggregates, treatment of contaminated soil, and maintenance and upkeep of roads and outdoor areas.