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Media File No. 272776 The tunnel-in-tunnel: within the drilled tunnel tube with a diameter of around 17.50 m, a double-story road tunnel is being realized – mainly constructed using in-situ concrete together with a comprehensive PERI solution.

Media File No. 272776

The tunnel-in-tunnel: within the drilled tunnel tube with a diameter of around 17.50 m, a double-story road tunnel is being realized – mainly constructed using in-situ concrete together with a comprehensive PERI solution.

Media-ID: 272776
Medium provided by: Washington State Department of Transportation, image used with kind permission.
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This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner.
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Last updated on: 14/03/2017

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