On the Enese-Csorna sector, our assignment comprises seven kilometres of 2×2 lane expressway, as well as the erection of five major structures, not to mention the relocation of several public utilities (power and telecommunication cables, water pipes, and carbon hydrogen lines). Furthermore, we are setting up six corrections to existing routes, and two roundabout intersections to link the new stretch of road to main road 85. The work site crosses a Natura 2000 classified area, which demands the utmost attention and carefulness. As an interesting and yet challenging work phase, we are carrying out controlled drilling right underneath the nature preserve at a length of 952 metres, rendered necessary by instructions from the environmental authority regarding relocation of a DN-400-mm diameter natural gas line.