Implenia upgrades St. Gallen city expressway as part of joint venture

Switzerland’s Federal Roads Office (FEDRO) has awarded a contract for construction work on the St. Gallen city expressway, worth CHF 165.1 million, to the “Stadtautobahn” joint venture, in which Implenia has a 30% share.

Dietlikon, 6 April 2021 - The Swiss Federal Roads Office (FEDRO) is upgrading the ageing St. Gallen city expressway between St. Gallen West and St. Gallen Ost, a stretch that includes the four junctions Winkeln, Kreuzbleiche, St. Fiden and Neudorf. It has awarded the contract for the upgrade work to the “Stadtautobahn” joint venture between Implenia, KIBAG, Cellere and Morant.

After more than 30 years and with traffic volume of around 100,000 vehicles a day, the time has come to renovate the stretch of road. Work will begin at the end of May 2021 and finish by the end of 2024. The contract includes surfacing, drainage systems, kerbs and noise abatement walls, as well as the renovation of various bridges, galleries, retaining structures and the Stephanshorn Tunnel, plus construction of a new footbridge. Implenia’s role is not just to supply specific expertise in geotechnical systems and special foundations, but also to manage the commercial side of the project.

The client was impressed by the “Stadtautobahn” JV across all the relevant criteria. The decision was not only based on price, but also on the quality of the construction schedule (complete with processes and dependencies), the technical report, key personnel and a risk analysis. Sustainability also played an important role in the tender: in order to minimise emissions and the amount of material consumed across the whole project, the JV aims to use all the recovered and delivered materials as efficiently as it can and to keep transport routes as short as possible.

Christian Späth, Head Division Civil Engineering Implenia: “The renovation of the St. Gallen city expressway is a complex large-scale project and we look forward to combining Implenia’s deep pool of expertise in bridge, tunnel and road construction with our extensive experience in managing large infrastructure projects – exactly as our strategy requires.”



Contact for media:

Corporate Communications, T +41 58 474 74 77, communication@implenia.com


Contact for Investors and Analysts:

Investor Relations, T +41 58 474 35 04, ir@implenia.com


Dates for investors:

17 August 2021:               Media and analysts’ conference on the half-year results


As Switzerland’s leading construction and real estate service provider, Implenia develops and builds homes, workplaces and infrastructure for future generations in Switzerland and Germany. It also plans and builds complex infrastructure projects in Austria, France, Sweden and Norway. Formed in 2006, the company can look back on around 150 years of construction tradition. The company brings together the know-how of its highly skilled consulting, planning and execution units under the umbrella of an integrated leading multi-national construction and real estate service provider. With its broad offering and the extensive experience of its specialists, the Group can realise complex major projects and provide customer-centric support across the entire life-cycle of a building or structure. It focuses on customer 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 8,500 people in Europe and posted revenue of almost CHF 4 billion in 2020. The company is listed on the SIX Swiss Exchange (IMPN, CH0023868554). More information can be found at implenia.com.