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A10 motorway enclosure tunnel, Flachau

Austria

A 492 m long stretch of the A10 motorway has been enclosed at Flachau. The structure being erected here is a massive enclosure which will be covered with spoil after completion so as to create a valley-head. On the southbound carriageway, noise-abatement galleries will follow on from both ends of the enclosure tunnel. To save on manhours and costs, the site engineers opted for a Doka tunnel-formwork traveller with non-tied wall formwork.

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Project data

Year of completion
2010
Project duration
17 Months
Country
Austria
Contractors
Steiner Bau Ges.mbH
Structure
Tunnel

Partially monolithic construction method

Clear width
9.90 m
Clear height
7.00 m
Formed length of tunnel
984 m
Length of concreting section
12 m
Number of casting sections
82