N02 Amsteg - Meitschligen, Repair of Intschi Retaining Wall

The foundation of the retaining walls south of the Ried Tunnel portal (N02 between Amsteg and Wassen) had been eroded in a number of floods. A variety of measures were undertaken to ensure the structural safety of the existing support structure, to protect the bank zone from erosion as well as optimise drainage into the Reuss channel.

Main Data

  • Support to the overall project manager during the design phase with project management, project coordination and adinsitratio
  • Reporting, recording of minutes, documentation
  • Construction management during the execution phase
  • Cost, schedule and quality management according to ASTRA standards
  • Services in procurement, contract management, claim management, invoice control
  • Support with public relations work


Astra (Federal Roads Office) Zofingen Branch


IUB Engineering AG

Construction period

2009-2013 (with interruption)

Construction costs

CHF 1.1 million

Scope of services

Owner’s engineering services and construction management for SIA phases  selection procedure (22) to commissioning / completion (53)