Channel Tunnel

SGE

Picture with legend
The Channel Tunnel, construction site of the century

xThe inauguration of the Channel tunnel in 1994 marked the end of an exceptional technical and human adventure. The idea dated back to 1802, when Albert Mathieu, an engineer, suggested digging a tunnel to link France to England, but the project did not materialise until France and the UK signed a treaty to this effect in 1986.
The tunnel includes three galleries, and is a total of 50.5 kilometres in length, of which 37 kilometres run under the channel, which is fifty metres deep. The terminal installations on the French side cover 520 hectares, i.e. the size of an international airport. Of the five French companies that met this exceptional technical challenge, VINCI is represented through two of its businesses, Dumez and SGE.