LessonsGotthard-base-tunnel - Open 2017 (Began in 2004) - 35.5mile long (the longest one) * Seikan Tunnel ... - Fund for BAHN 2000, Tunnel Projects Coordination among modes - Dense Networks (bus, rail, and boat) ... - National Referendum 1987 - Approval of fund for BAHN 2000, Tunnel Projects…LessonsSource: http://www