N4 New Axenstrasse construction lot 301
Facts and Figures
Company | PORR SUISSE AG in consortium |
Principal | Canton Schwyz and Uri |
Location | Axenstrasse - Switzerland |
Type | Road construction, Special civil engineering |
Runtime | 03.2024 - 10.2026 |
N4 New Axenstrasse construction lot 301
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
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.