The Zurich main station - Altstetten - Oerlikon cross-city line forms the central part of the West- East-axis of the Swiss railway lines. The Weinberg tunnel is the centrepiece of the cross-city line and connects the new through station “Löwenstraße” in Zurich with Oerlikon station.
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.
The Westerschelde tunnel ensured the first safe connection between the provinces of Zeeuwsch-Vlaanderen and Zuid-Beveland in the Netherlands. High water pressures in connection with loose soil posed new challenges to tunnel construction.