| 1985 | Establishment of ALWAG Tunnelausbaugesellschaft mbH. |
| 1992 | Construction of workshop #4 in the west of the office building |
| 1998 | First, successful application of the AT - Pipe Umbrella Support System at Siebergtunnel (AT); construction of workshop #5 |
| 2006 | Aquisition of ALWAG Tunnelausbau Gesellschaft m.b.H. by DYWIDAG-Systems International GmbH (DSI). At that time, ALWAG has around 60 employees and has been managed by Mr. Karl Böhm for 20 years |
| 2007 | ALWAG represents DSI's Tunneling Division at the BAUMA in Munich, the most important construction trade fair worldwide |
| 2009 | Change of name from ALWAG Tunnelausbau Gesellschaft m.b.H. to DYWIDAG-Systems International GmbH. The company will continue to use the strong brand name of ALWAG Systems on the market. The merger’s aim is to create a consistent market presence in Europe and to sustainably strengthen the international supply of innovative “ALWAG Systems” |