The company Les Entreprises SBBM was set up in 1973, taking over the construction activities of SBB, which became a holding company. After the merger of the nationally and internationally active subsidiaries, the company took its present name of BESIX.
In the 1980s BESIX acquired three major subsidiaries: Entreprises Jacques Delens in Brussels, Etablissements Jean Wust in Malmedy and Vanhout in Geel. Through its subsidiary Six Construct, BESIX is active in the United Arab Emirates, Oman, Qatar and Bahrein.
BESIX further operates internationally in a wide range of countries, including the Netherlands, Luxembourg, France, Great Britain, Italy, Poland, The Republic of Azerbaijan, Morocco, Algeria, Libya, Egypt, Equatorial Guinea, Cameroon, Trinidad-Tobago and Jamaica.
BESIX's most important know-how lies primarily complex marine engineering projects (quay walls, piers, jetties, breakwaters, etc.), major building works and high-rise in particular (airports, hotels, office buildings, hospitals, etc) and large scale infrastructure projects (motorways, railways, tunnels, bridges, etc.).