immo!nvest – Die Plattform für Standorte und Immobilien

Tag: Tunnelbau

  • Infrastructure investment gains momentum in Europe

    Infrastructure investment gains momentum in Europe

    Construction company Impleniahas secured major infrastructure projects in Germany and Norway, according to a press release. The contract package includes the new Peene Bridge in Wolgast, the replacement of the Main Bridge in Marktbreit, the first construction phase of the Riederwald Tunnel in Frankfurt am Main and the new Lågen Bridge in Norway.

    For the new Peene Bridge in Wolgast, Implenia is leading a consortium with DSD Brückenbau, Victor Buyck Steel Construction and Stahl Technologie Niesky. The approximately 1.4-kilometre-long cable-stayed bridge will connect the A20 motorway with the island of Usedom and, with a clearance height of 42 metres and 70-metre-high pylons, will be one of the largest bridges of its kind in Europe. Construction work has been underway since December 2025 and is expected to continue until 2030.

    Implenia is the technical leader in a consortium with Plauen Stahl Technologie for the replacement of the Marktbreit Main Bridge on the A7 motorway. The new bridge will be built as a steel composite box girder using the incremental launching method. It will be around 925 metres long and 31 metres wide. Construction is taking place while traffic continues to flow and will be completed by around 2033. The new contracts in Germany are rounded off by the construction of the new Riederwald Tunnel in Frankfurt am Main. In a consortium with Wayss & Freytag Ingenieurbau and Bickhardt Bau, Implenia is realising the centrepiece of the gap closure between two important motorway sections. The approximately 1.1-kilometre-long tunnel is being built using the open construction method. Work began in 2025 and will take around three years.

    In Norway, Implenia is building the Lågen Bridge on the new E6 Roterud–Storhove motorway on behalf of AF Gruppen. The 552-metre-long, four-lane concrete box girder bridge spans the Lågen River north of Lillehammer. Strict environmental regulations to protect breeding birds, spawning grounds and biodiversity minimise the impact on the sensitive delta area.

  • Expansion of the S-Bahn infrastructure in Frankfurt

    Expansion of the S-Bahn infrastructure in Frankfurt

    DB InfraGO AG has commissioned Implenia to build the inner-city section of the Nordmain suburban railway in Frankfurt. Specifically, the construction and real estate company from Opfikon is to realise the underground section of the S-Bahn from Konstablerwache via the new S-Bahn station Frankfurt (Main) Ost (tief) to Fechenheim for the Deutsche Bahn subsidiary. The contract is worth over 200 million euros, Implenia announced in a press release.

    The contract includes the starting excavation pit Trog and the excavation pit for the underground S-Bahn station Frankfurt (Main) Ost (tief), a series of ancillary excavation pits and engineering structures, as well as two tunnel tubes approximately 1.2 kilometres long. They will be constructed by mechanised tunnelling. Implenia will also carry out extensive dewatering measures and provide a range of specialised civil engineering services. Work is scheduled to start at the beginning of 2026 and be completed by 2031.

    “The further expansion of a functioning transport infrastructure is central to the sustainable development of our cities,” said Erwin Scherer, Head Division Civil Engineering at Implenia, in the press release. “I am delighted that Implenia, with its many years of experience and extensive expertise, is able to contribute to improving public transport in the densely populated Rhine-Main region.”

  • Implenia wins major contract in Sweden

    Implenia wins major contract in Sweden

    Trafikverket has awarded a major contract to Implenia. Specifically, the construction and real estate company based in the Glattpark district of Opfikon is to build a section of the Haga project, including a railroad tunnel and station, for the Swedish Infrastructure Agency. The contract is worth more than CHF 100 million, Implenia announced in a press release.

    The Haga project is part of the new West Link connection, which will link Gothenburg’s local transport system to the lines running through the city. Implenia will build the new underground Haga station with platforms and three entrances under the Vasastan district of Gothenburg. There will also be a railroad tunnel with parallel service and emergency tunnels as well as ventilation and fire protection tunnels.

    Construction work is scheduled to start in the fall of this year and the project should be completed in 2029. “Implenia will use its many years of extensive experience to implement the project and realize the new important transport infrastructure in logistically challenging, extremely tight inner-city spaces,” said Christian Späth, Head Division Civil Engineering at Implenia, in the press release. “We would like to thank Trafikverket for once again placing its trust in Implenia as an expert in large, complex tunnel and civil engineering projects.”

  • Albula Tunnel celebrates opening

    Albula Tunnel celebrates opening

    The Rhaetian Railway(RhB) celebrated the official opening of the new Albula Tunnel on 8 June. The event was attended by over 300 invited guests from the railway industry, politics, business and tourism, the RhB reported in a press release. The guest of honour was Albert Rösti, Head of the Federal Department of the Environment, Transport, Energy and Communications. The opening ceremony was complemented by a public event on 9 June at the north and south portals in Preda and Spinas.

    The 5860 metre long new Albula Tunnel will replace the old connection between Preda and Spinas, which was opened in 1903. The old tunnel is now a UNESCO World Heritage Site and is to be converted into a safety tunnel in the future. Twelve cross-connections have been created between the two tunnels for this purpose.

    In 2010, RhB decided in favour of building a new tunnel instead of repairing the old one after a thorough examination. “The decisive arguments in favour were the relatively low cost difference, hardly any timetable-relevant restrictions during the construction phase and the significantly higher safety level of a new facility,” according to a RhB brochure on the tunnel project. High quality and sustainability are cited as further advantages in favour of the new construction. A total of CHF 407 million was invested in the tunnel, which took ten years to complete. The first scheduled train through the new tunnel is due to run on 12 June.

  • Company wins second contract for Rogfast tunnel project

    Company wins second contract for Rogfast tunnel project

    Construction company Implenia has won a second sub-project in the Rogfast tunnel project with its Norwegian partner Stangeland Mask in. E02 Kvitsøy is even more complex than the E03 Boknafjord Tunnel, which Implenia is already building together with Stangeland Maskin as a joint venture, and is worth CHF 420 million to Implenia. The order value for the entire project is CHF 540 million

    “We are proud to have been selected for this important project together with our joint venture partner Stangeland Maskin,” said Erwin Scherer, Head of Tunnelling at Implenia, in a press release. “E02 Kvitsøy is another complex tunnel project and therefore fits perfectly with our strategy, and we will contribute our extensive expertise in tunnelling, concrete and water and frost protection.” The contract with the Norwegian Public Roads Administration is scheduled to be signed on 7 June.

    E02 Kvitsøy is an 8.8 kilometre long two-way tunnel with a cross-section of 10.5 metres. It is to be built south and north of Kvitsøy in Fylke Rogaland in southern Norway at a depth of around 230 metres below the sea surface. The tunnel includes two ventilation shafts, a junction with ramps and a roundabout as well as 1.6 kilometres of road in the daytime area, two bridges and a large sea embankment. An industrial estate is to be built on this. Work is scheduled to start in late summer 2024 and be completed in 2030, with Implenia holding a 77 per cent stake and Stangeland Maskin 23 per cent in the joint venture. Implenia is responsible for tunnelling and lining the tunnel in the upcoming construction project, while Stangeland Maskin is responsible for material transport, including backfilling, earthworks and road construction in the tunnel and surface areas.

  • Implenia is leading the construction of the Ligerz Tunnel

    Implenia is leading the construction of the Ligerz Tunnel

    The IBD consortium has been awarded the contract by SBB to build the Ligerz tunnel, Implenia announced in a press release. The construction and real estate company from Opfikon is the leader of the IBD consortium. In addition to Implenia, the consortium includes the construction companies Bernasconi from Luterbach SO and De Luca from Biel BE.

    The contract includes the construction of a 2.1-kilometre-long double-track tunnel with four escape tunnels and a 114-metre-long viaduct for the N5 motorway exit, as well as various additional structures. The contract is worth a total of 220 million Swiss francs. Around CHF 150 million of this is Implenia’s share.

    The contract is Lot 2 of the Ligerz-Twann double-track extension, which is intended to eliminate the rail bottleneck on the Jura river line between Lausanne and Biel. The Zurich-based construction and real estate company is deploying its experts from the fields of civil, tunnelling, special civil engineering, structural engineering, railway engineering and maritime work for the project. “We are looking forward to executing this large and complex railway infrastructure project together with our ARGE partners and to once again demonstrating our many years of experience and expertise in this field,” Christian Späth, Head Division Civil Engineering at Implenia, is quoted as saying in the press release. The location of the tunnel in protected areas is described there as a major challenge for implementation.