Extraplan Oy, officially Insinööritoimisto Extraplan Oy

Founded: 1 January 1977 in Espoo, Finland, by five civil engineers with equal shares, among them the present owner

Registration of the Articles of Association: 12 July 1977, Ministry of Trade and Industry, Helsinki, Finland

Registered: 9 December 1977, National Board of Patents and Registration of Finland

Line of Business: Design, research and construction services related to the field of civil engineering, especially bridge engineering.

Ownership: Sole owner (Aarne Jutila) since 1985