UplaNS Maintenance Project N12, Era U Wangental, A12 Flamatt – Bümp

nder a subcontract to the overall rehabilitation project ERA U, 12 retaining walls and a bridge were repaired.

The existing concrete was removed in the affected areas using high pressure water jets and reprofiled with a new layer of concrete or mortar. On several structures an additional surface protection (OS5) was applied.

A polymer bitumen roadway transition was constructed for the repaired bridge.

The bridge was sealed with an epoxy resin sealant and a PBD sealant.

Main Data

  • Concrete repair on 12 structures: 655 m2
  • Bridge repairs: 670 m2
  • (255 KB)


Civil Engineering Office of Canton Bern, Operation and Maintenance of National Roads


IUB Engineering Ltd

Construction period


Construction costs

CHF 1.6 million

Scope of services

  • Assessment of condition and measures concept
  • Design
  • Tendering
  • Construction management