Implenia starts construction of new Main bridge in Marktbreit
Glattpark (Opfikon), April 28, 2026 - Today's ground-breaking ceremony marks the official start of the demolition and replacement of the Marktbreit Main Bridge on the A7 highway. Implenia is carrying out the project on behalf of the federal government's Autobahn GmbH as technical leader in a joint venture with Plauen Stahl Technologie; both partners each hold a share of around 50%. The new replacement construction takes account of the increasing volume of traffic on the A7 - especially freight and heavy goods traffic - and thus strengthens one of Germany's most important north-south transport axes.
The ground-breaking ceremony was attended by representatives of the client and politicians, including Ulrich Lange, Member of the Bundestag and Parliamentary State Secretary to the Federal Minister of Transport.
"With the replacement of the Mainbrücke Marktbreit bridge, we are making an important contribution to the efficiency of the A7 highway. We are pleased to contribute our many years of experience and extensive expertise in bridge construction to the successful realization of this challenging project," said Henning Schrewe, Head ICS Germany at Implenia, on site.
The new Main Bridge is being built as a steel composite box girder using the incremental launching method. It has a total length of around 925 m and a width of 31 m. Building Information Modeling (BIM) was already used for the design and tender planning; this method will also be used for the execution planning. After completion, the consortium will hand over a complete "digital twin" of the bridge to the client.
The construction work is being carried out while traffic is still running in order to keep restrictions for road users to a minimum. This places high demands on the construction logistics. The first preparatory work was carried out in the fall of 2025; completion is scheduled for 2034. Implenia is applying its proven expertise in bridge construction and in the digital planning and implementation of complex construction projects to this infrastructure project.
Contact for media:
Corporate Communications, T +41 58 474 74 77, communication@implenia.com
As a leading Swiss construction and real estate services provider, Implenia develops, builds and manages living spaces, working environments and infrastructure for future generations in Switzerland and Germany. Implenia also offers tunnel construction and related infrastructure services in other markets. Founded in 2006, Implenia can look back on around 160 years of construction tradition. The company brings together the expertise of highly qualified consulting, development, planning and execution units under one roof to form an integrated, multinational construction and real estate services provider. With its broad range of services and the expertise of its specialists, the Group realizes large, challenging projects and supports clients throughout the entire life cycle of their buildings. The focus is on customers' needs and a sustainable balance between economic success and social and environmental responsibility. Implenia, headquartered in Opfikon near Zurich, employs over 8,000 people (FTE) across Europe and generated sales of CHF 3.5 billion in 2025. The company is listed on the SIX Swiss Exchange (IMPN, CH0023868554). Further information can be found at implenia.com.
