Second Tunnel Section for the Düsseldorf Wehrhahn Line driven

The Wehrhahn Line, a 300 million euro Metro project, is intended to relieve traffic in downtown Düsseldorf once it opens in 2015, for it will replace several tram routes operating on the surface. For this purpose 2.3 km long tunnel bores, each with 8.30 m diameter are being driven by mechanised means for what will later be 2 directional tracks. They are being excavated one after the other in 2 individual drives (1,298/955 m) with the same tunnel boring machine (TBM), a mix-shield with 9.50 m diameter (S-491 Herrenknecht), 65 m long and weighing 1,300 t. The tunnel is being lined with...

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Issue 2011-04 Germany

First Tunnel driven for the Düsseldorf Wehrhahn Line

The Wehrhahn Line, a 300 mill. euro project is intended to relieve traffic in the centre of Düsseldorf considerably once it is opened in 2015. The 3.4 km long Underground line will replace a number...

Issue 2013-07 Italy

Sparvo Tunnel: Second Breakthrough

Currently to develop the A1 motorway in Italy, the busy part-section between Bologna and Florence (90,000 vehicles/day) is being augmented by an alternative route – the 2,413 m long Sparvo Tunnel...

Issue 2015-03 France

Second Metro Line in Rennes: Excavation will be finished in 2017

The second Metro Line (Metro Line B) in the French city of Rennes with 15 stations will be 13 km long. 8.1 km of this total will be driven mechanically and 2.4 km by cut-and-cover. The remaining parts...

Issue 2012-03 United Kingdom

The 2 first Crossrail TBMs in Action

For the Crossrail project a new rail link (approx. 30 km) is to be driven beneath central London involving 2 single-track tunnel bores roughly 7 m in diameter using a total of 8 tunnel boring...

Issue 2013-02 Austria

Pfänder Tunnel: 2nd Bore opened for Traffic

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