Today, we are a full‑service civil engineering contractor with 25 years of experience delivering small and large transportation and infrastructure projects across the central Eastern Norway region.
Marthinsen & Duvholt was founded in 1999 by two former colleagues and friends. Since then, we have experienced significant growth and are today one of the largest contracting companies in Eastern Norway.
We are a full‑service civil engineering contractor specialising in road, water and wastewater infrastructure, as well as major land development projects, railway work, and tunnel construction. In addition, we hold substantial experience in hyperscale data centres and transformer stations, strengthening our capabilities in technically demanding projects.
Our head office is located in Sandefjord, with a branch office at Fornebu. We carry out both small and large assignments across the entire Eastern Norway region.
We have experienced stable growth since our establishment and continue to see an increasing volume of projects.
174 skilled workers 129 administrative and technical staff 21 apprentices
The backbone of our company is our skilled and dedicated employees. Together, we care about our projects, the environment around us, and each other. That is why we place great emphasis on fostering a positive corporate culture and providing a working environment defined by professional development, collaboration, and pride in our craft.
Our shared goal is for everyone to feel a sense of involvement, unity, and responsibility.
In 2011, Skanska Norge became a shareholder in Marthinsen & Duvholt. Today, we are a wholly owned subsidiary of Skanska Norge, a development that has opened the door to new opportunities and larger, more exciting projects for all our employees.