Implenia wins contract for key section of Bremen’s motorway ring-road

New motorway ring-road will improve traffic situation in the whole of north-west Germany | Implenia working in joint venture to build pre-stressed concrete road bridge, a cutting and motorway lanes | Large, complex infrastructure project | Contract worth more than EUR 100 million to Implenia

Glattpark (Opfikon), 14 March 2024 – On behalf of DEGES Deutsche Einheit Fernstrasse Planning- und -Bau GmbH, Implenia is completing the ring of motorways around the city of Bremen. Working in a joint venture with Johann Bunte Bauunternehmen, the Group is building section 2/2 of the A 281 motorway. The total order is worth more than EUR 130 million gross. Implenia’s share is over EUR 100 million gross. The project is in line with Implenia’s strategy of focusing on large, complex infrastructure projects. The new motorway link will significantly improve the traffic situation in the whole of north-west Germany. 


Section 2/2 connects the existing section of the A 281 via the Arsten feeder to the A 1. The joint venture contract includes the construction of a 1.7 km section of the motorway bypass between the Neuenlander Ring and the Kattenturmer Heerstrasse near Bremen Airport. A 400 m elevated section will be carried by a prestressed concrete bridge. Support walls with bored pile foundations are being built first to take the motorway up to the bridge. The contract also includes a 290 m long cutting, the entrance area for a future tunnel under the Kattenturmer Heerstrasse, and an approximately 1 km long, four-lane motorway section between the southern end of the elevated road and the start of the cutting. The project is being managed using Lean Construction methods. Building work begins in May 2024 and should be completed in early 2029.


The new Bremen ring-road should significantly reduce noise and pollution problems and thus improve the quality of life in surrounding residential areas. “We are extremely pleased that DEGES has once again chosen us because of our integrated service offering for complex infrastructure projects,” says Henning Schrewe, Head Civil and Special Foundations Germany at Implenia. “Thanks to our experts in civil engineering and special foundations, we can deliver these services as an integrated unit and successfully execute this major project.”

Implenia is completing the ring of motorways around Bremen; this includes a section near the airport leading to a new tunnel (image: © DEGES).

Contact for media:

Corporate Communications, T +41 58 474 74 77, [email protected] 

Contact for Investors and Analysts:

Investor Relations, T +41 58 474 35 04, [email protected] 

Dates for investors:

26 March 2024: Annual General Meeting

21 August 2024: Interim results 2024, Analysts and Media Conference 

As Switzerland’s leading construction and real estate service provider, Implenia develops, builds and manages homes, workplaces and infrastructure for future generations in Switzerland and Germany. It also offers tunnelling and related infrastructure services in other markets. Formed in 2006, the company can look back on around 150 years of construction tradition. Implenia brings together the know-how of its highly skilled development, planning and execution units under the umbrella of an integrated multinational construction and real estate service provider. With its broad offering and the expertise of its specialists, the Group realises large, complex projects and provides client-centric support across the entire life cycle of a building or structure. It focuses on client needs and on striking a sustainable balance between commercial success and social and environmental responsibility. Implenia, with its headquarters in Opfikon near Zurich, employs more than 9,000 (FTE) people across Europe and posted revenue of CHF 3.6 billion in 2023. The company is listed on the SIX Swiss Exchange (IMPN, CH0023868554). More information can be found at implenia.com.