The tunnel was constructed using the New Austrian Tunnelling method, relying on the stress of the surrounding rock to stabilise the tunnel. Preparatory work on the tunnel began on 17 April 2000, and drilling work began on 21 November of the same year.
The tunnel was built using the New Austrian Tunneling method, relying on the tension of the surrounding rock to stabilize the tunnel. Initial work on the tunnel started on 17 April 2000, and drilling operations began on 21 November of the same year.