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, which relies on the tension in the surrounding rock to provide support. Initial preparations for the tunnel began on 17 April 2000, and actual excavation started on 21 November of the same year.