A09 Pyhrn Autobahn Inzersdorf – Schön Sanierung Straße, Tunnel inkl. E&M – Bauleistungen15. March 2023
Schrack Technik Seiersberg23. March 2023
Office of the Upper Austrian provincial government
Directorate road construction and traffic
Department bridge and tunnel construction
20.06.2022 – 30.09.2025
Austria, Upper Austria
The project bypass Weyer on the B 121 Weyerer Straße in upper Austria involves the construction of two new tunnel tubes.
The whole construction lot has a length of 1.2 km. It includes the construction of two mining tunnel tubes – Tunnel Weyer 1 with a length of 612 m and Tunnel Weyer 2 with a length of 65 m also a bridge structure over the lake Dürnbach, two roundabouts and an extra traffic junction after the tunnel Weyer 2.
The excavation of the two tunnel tubes took place in loose soil material. At sensitive areas the construction characteristics are improved due to tunnelling attendant grouting.
In approx. the middle of the longer tunnel there is an emergency exit by crosscut and a shaft to construct.
Both tunnels as well as the crosscut and the shaft get a insitu concrete lining.