The core activity of Rudolf Wirz Strassen- und Tiefbau AG primarily encompasses road and civil engineering, including: road construction and maintenance, civil engineering works, utility construction (drainage and supply lines), pavement construction and manufacturing, environmental works (adaptation to existing environments, preparation for new construction, maintenance work), paving work, excavation and demolition work, suction dredger work, landfills and recycling. The company offers these services to both private clients and public contractors and operates its own asphalt plant for the production of high-quality asphalt.