Tradenberg tunnel - the contractor in the role of client / Tradenbergtunnel - der Bauausführende in der Rolle des Bauherrn

As part of the project "PPP Ostregion Paket 1", a tunnelling project is being constructed on the basis of a performance specification for the first time in Austria, with the entire geological risk being borne by the contractor. The two-tube Tradenberg tunnel, each tube carrying one traffic direction, is in the S1-West section of the 51 km long Y-Trasse to be constructed by the consortium Bonaventura. The overall length of the tunnel is 2,457 m or 2,423.5 m, of which 1,403.6 m or 1,359 m are to be mined underground. The entire section is to open for traffic in early 2010. The contract model has the effect of transferring competence to the contractor. This opens a wide range of organisational possibilities for the construction consortium, but accompanied by an enormous increase in responsibility and commercial risk.