Tenders should be invited this summer for the construction of the 11.6km long Wienerwald rail tunnel in Vienna, Austria.
Currently under design, the tender documents for the twin-bore tunnel are being prepared for the option of either NATM or TBM construction. The estimated value is US$240M-US$290M.
Josef Daller, partner at iC Consulenten, said that the client hopes to attract wider attention to the project by giving the potential contractor the choice of excavation. This seldom-used technique will, “let the market decide which is the most economical method,” Daller said.
The contract includes the construction of two 76m2 tubes, with one emergency ventilation shaft, an access gallery and a cross-over section of double track tunnel, widened to 120m2. The expected geology along the alignment is flysch and molasses.
The tender documents are being prepared by a JV of Electrowatt Infra, iC Consulenten, Basler & Hofmann, and Strobl. According to the current schedule, tenders will be invited in July 2003, with a construction start of April 2004. Construction should be completed by 2010.
The tunnel forms an integral part of the new 42.3km long Vienna-St. Polten railway line in Austria. The client is Hochleistungs AG (HL AG).
