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Road construction

N4 New Axenstrasse construction lot 301

Axenstrasse, Switzerland / 03.2024 - 10.2026

New construction of a retaining structure on the mountain side (anchor wall in sub-foundation construction and lining wall): Work and construction logistics in very steep terrain:

  • Excavation of loose soil and rock, large quantities
  • Excavation pit stabilisation using nail wall
  • In-situ concrete work in small stages (anchored element wall)
  • Nailing of fissure body
  • Pre-stressed, permanent strand anchors
  • Seepage pipe
Photo: Aerial view of the construction site with large crane. The road is used by cars and is located between the lake and the steep rock face.

Facts & Figures


Company

PORR SUISSE AG in consortium

Type

Road construction, Special civil engineering

Runtime

03.2024 - 10.2026

Principal
Canton Schwyz and Uri

N4 New Axenstrasse construction lot 301

New construction of cantilever and supporting structures, stacking basin and outlet structure on the lakeshore in confined spaces between the SBB railway line and Alte Axenstrasse:

  • Removal of road, reinforced concrete and natural stone construction
  • Excavation pit stabilisation using nail wall
  • In-situ concrete work
  • Waterproofing
  • Backfilling
  • Pipe jacking (diameter 610mm) under the SBB train line
  • Hydraulic engineering with construction of outlet structure

Road construction: foundation layer, surfacing, drainage, utilities and equipment.

What ultimately counts in the construction business is successfully completed projects. PORR has many of these.