N03, 56 Maintenance Plan Wollishofen - Wädenswil, Owner’s Engineer

The 15 km long stretch of the N03/56 which went into operation in 1966 is to undergo rehabilitation. Following completion of the maintenance concept, as part of a series of measures, subprojects such as a detailed project for noise remediation as well as preliminary works to rehabilitate the Aabachweiher Bridge were implemented. The entire maintenance planning project was parked during the strategic phase. The area east of the Aabachweiher Bridge has been incorporated into and will be executed as part of the subsequent maintenance plan.


ASTRA Winterthur Branch


Consultant for project planning 2009–2015: IUB Engineering Ltd. in consortium

Construction period

Advance measures 2013–2016, entire project currently suspended

Construction costs

CHF 170 million

Scope of services

Owner’s Engineer for the phases global maintenance concept to implementation/commissioning