Double-tube road tunnel under the Gent-Terneuzen Canal provides a new connection between the important ports of the Netherlands in the north and those of Flanders in the south.
Greatly varying geology required different driving methods during the construction of the Uetliberg Tunnel in Switzerland. The 4.4 km long road tunnel connects the Birmensdorf bypass with the existing national road Zurich-Chur.
Rehabilitation of the water reservoir ensures the flood protection in the Isar valley. The construction section comprises the construction of the seepage water tunnel as well as the access structures at both ends of the tunnel.