Switzerland – Architectural, construction, engineering and inspection services – Sanierung Neu- und Ausbau Stiegstrasse und Stiegweg - Ingenieurleistung

The subject of the tender is the engineering services of SIA-Phases 32 Construction Project up to 53 Commissioning, Completion for the planning and realisation of the road, utility and drainage systems in the Sonnenberg area. The project includes the renovation of the Stiegstrasse, the new construction of the Stiegweg as well as the renewal and expansion of the utility infrastructure. Special challenges include the trenchless crossings of the Sihltalstrasse and the SZU route by means of microtunnelling and pipe jacking, the excavation pits required for this, and the coordination of the various utility and sewerage measures. Furthermore, all necessary permitting and approval procedures with the competent authorities and works owners must be ensured.

· Renovation Stiegstrasse: approx. 920 m

· New construction Stiegweg: approx. 65 m

· New construction rainwater sewer: approx. 800 m incl. microtunnelling

· Replacement water main: approx. 120 m incl. pipe jacking

· Replacement mixed sewer: approx. 120 m

· Garden and landscape construction within the project perimeter