Entry into the Swiss construction market in cooperation with the construction company Walker & Söhne AG in Altdorf UR and the establishment of Walker-Porr AG.
Execution of various building construction and civil engineering projects.
Received first tunnelling contract, expansion of activities in civil engineering and infrastructure construction.
PORR acquired all shares in the Altdorf construction company, and founded PORR SUISSE AG.
Establishment in civil engineering, infrastructure construction and tunnelling market sectors with participation in important NRLA trans-alpine tunnel projects.
Opening of branch office in Zurich. Execution of three initial projects as general contractor in building construction.
Intensification and continual expansion of activities as general and total contracting company in building construction.
First project as a full-service building construction company implemented in Bern, and a branch opened in the capital city.
Activities as a general contractor and full-service building construction company expanded to include Northwestern Switzerland. Branch opened in Basel.
First project as a full-service building construction company in Romandy.