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- 1918 Construction of HGB III (main building 3), now more widely known as De Inktpot (The Inkpot, Utrecht)
- 1921 Incorporated as NV Het Spoorwegbouwbedrijf
- 1972 Merger with Christiani & Nielsen (Danish construction company)
- 1974 Name changed to Strukton Groep
- 1975 Acquisition of Bureau voor architectuur en Projectontwikkeling Spakenburg BV
- 1976 Acquisition of Koot’s Bouwbedrijf Zeist BV
- 1984 Acquisition of activities of Koninklijk Aannemersbedrijf Woudenberg Ameide BV
- 1992 Acquisition of activities of Service Technisch Beheer
- 1994 Acquisition of De Meijer (Belgium)
- 1997 Partial acquisition of NS Infraservices
- 1997 Partial acquisition of ER-Groep
- 1998 Acquisition of 40% interest in CLF (Italy)
- 1999 Sale of Strukton Staalbouw BV
- 2000 Acquisition of Terracon and Colijn
- 2000 Sale of Logitech
- 2001 Sale of Strukton De Meijer (Belgium)
- 2002 Sale of Wisselbouw Nederland BV
- 2002 Sale of 40% of Railpro
- 2003 Acquisition of 60% interest in Svensk Banproduktion (Sweden)
- 2006 Incorporation of Mergor, specialist in immersion techniques
- 2006 Acquisition of Reef, earthmoving and road building
- 2006 Acquisition of WorkSphere from Stork
- 2006 65% interest in Jernbaneservice (Norway)
- 2007 Acquisition of Georg Reisse (Germany)
- 2007 Increase in interest in Svensk Banproduktion (Sweden) to 100%
- 2007 Increase in interest in Jernbaneservice (Norway) to 100%
- 2007 Partial acquisition of Duik Combinatie Nederland
- 2008 Acquisition of shares in Betonmast Bane (Norway)
- 2010 Oranjewoud NV acquires Strukton Groep
- 2011 Sale of Strukton Materieel
- 2011 Acquisition of Ooms Avenhorn Groep BV
- 2011 Sale of an 80% majority interest in PPP projects to DIF
- 2011 Activities in Norway ended
- 2012 Acquisition of 50% interest in A1 Electronics Netherlands BV
- 2012 Acquisition of Van Straten
- 2012 Acquisition of Ooms, involved in earthmoving and road and waterway construction
- 2013 Acquisition of Rasenberg, involved in road construction
- 2013 Acquisition of Unihorn India, involved in freeways, bridges and airports
- 2013 Increase of interest in CLF (Italy) to 60%
- 2014 Merger of Strukton Bouw and Strukton Worksphere
- 2014 Acquisition of Siebens Spoorbouw BVBA
- 2014 Termination of small-scale railway construction activities in Germany
- 2015 Acquisition of NS Spooraansluitingen and start of Strukton Rail Short Line
- 2022 Sale of Worksphere
