Engineering services for Stiegstrasse and Stiegweg remediation and extension 2026 Tender
Original: Prestations d’ingénieur pour l’assainissement, le réaménagement et l’extension de la Stiegstrasse et du Stiegweg
Stadt Adliswil Planung Werke
In context
This is a contract notice published by a government body covering services. Bids are invited through an open procedure. Delivery covers Switzerland (CH-ZH). It is classified under Water, Climate Adaptation and Engineering and Infrastructure against the sustainability taxonomy rather than matched on keywords.
This tender procures engineering services (SIA phases 32–53) for the rehabilitation, expansion and utility-network renewal of two streets in Adliswil, Switzerland, including road reconstruction, stormwater and potable-water infrastructure, and microtunnelling works. Bidders should be engineering consultancies or multidisciplinary firms with expertise in infrastructure design, underground utilities, permitting coordination, and trenchless technology.
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About this tender
Engineering services for the sanitation, redevelopment, and extension of Stiegstrasse and Stiegweg in the Sonnenberg area. The project encompasses renovation of Stiegstrasse (approx. 920 m), new construction of Stiegweg (approx. 65 m), new rainwater drainage pipeline (approx. 800 m including microtunneling), replacement of water main (approx. 120 m including horizontal directional drilling), replacement of combined sewer line (approx. 120 m), and landscape/garden construction within the project perimeter. Key challenges include trenchless crossings of Sihltalstrasse and SZU route using microtunneling and horizontal directional drilling, required excavation pits, and coordination of various utility and sewage measures. The engineer must ensure all required permits and approvals from relevant authorities and utility owners. Services cover SIA phases 32 (construction project) through 53 (commissioning and closure) for planning and realization of roads, utility lines, and drainage systems.
Bidder eligibility
Criteria are specified in the tender documentation. Detailed eligibility requirements to be found in the full tender documents available at bausync.ch/ausschreibung/P-7z-4Xgzx7G.
How bids are scored
Criteria are specified in the tender documentation. Detailed award and evaluation criteria to be found in the full tender documents available at bausync.ch/ausschreibung/P-7z-4Xgzx7G.
Key requirements
- ✓Engineering design and project management across SIA phases 32–53 (concept through commissioning)
- ✓Expertise in trenchless technology (microtunnelling, horizontal directional drilling) for utility crossings
- ✓Coordination of multi-utility networks (stormwater, potable water, mixed sewers) and permitting with authorities and network operators
- ✓Landscape and green-space design within project perimeter
Procurement contact
The notice names a procurement contact for clarification questions.
CPV codes
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About this sector
Water funding covers supply, sanitation, wastewater treatment, water efficiency, catchment management and flood risk. A large share is public procurement for infrastructure and services, alongside grants for innovation and access in underserved areas. Bidders and applicants are typically assessed on technical capacity, operating experience and community impact.
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