Ligerz Twin-Track Tunnel Project - se beskrevne byggevarer

Beskrivelse: Ligerz Twin-Track Tunnel Project builds a 2.1 km double-track tunnel using advanced techniques to eliminate bottlenecks and enhance rail transport along the Jura River. Les mer ↧

Twin-Track Tunnel and Structures

The Ligerz Twin-Track Tunnel Project is a major infrastructure initiative in Switzerland focusing on constructing a 2.1 kilometer long twin-track railway tunnel. The tunnel is designed to eliminate the last railroad bottleneck on the Jura river line between Lausanne and Biel, significantly improving the rail connection and enabling half-hourly regional train services on this route. Besides the main tunnel, the project includes the construction of four escape tunnels, a 114-meter-long viaduct for the N5 highway exit, and several auxiliary structures. The existing railway line will be dismantled and redesigned to accommodate new infrastructure.

Mining and Cut-and-Cover Methods

Construction is planned using a combination of mining and cut-and-cover methods, with approximately 1,850 meters of tunnel excavated through mining and around 250 meters built via cut-and-cover technique. The process also involves concrete lining and full integration of advanced railway technology. Given the challenging topography between the lake and the hillside-where the national highway N5 and the cantonal road run-the project requires complex engineering coordination across tunneling, civil works, specialized foundations, maritime operations, and railway engineering disciplines. Excavated material will be transported ecologically by ship using specially designed pontoons.

Contractor, Budget, and Timeline

The project is implemented under the auspices of the Swiss Federal Railways (SBB), managed by the ARGE IBD consortium, with Implenia acting as the lead partner alongside Bernasconi and De Luca. The total contract value is CHF 220 million, of which Implenia's share is approximately CHF 150 million. Construction began in September 2024, with different project updates indicating completion expected either by the end of 2026 or 2029, reflecting the complexity and scale of the works.

Environmental Protection Measures

Environmental protection is a key aspect of the project, given its location within nationally protected zones, which include groundwater protection areas, fish farming sites, and archaeological monuments. To reduce environmental impact, the project uses innovative biodegradable emulsion explosives that lower nitrogen oxide and CO2 emissions during blasting activities. Additionally, the logistics and material transport strategies prioritize environmentally friendly approaches to mitigate disruption in this sensitive region.

Risk Management and Coordination

The project poses several risks including coordinating construction activities alongside ongoing railway and road operations in confined and complex terrain, which necessitates precise planning and execution. The multidisciplinary team of experts in civil, tunnel, railway, and maritime engineering actively manages these challenges to ensure safety and operational continuity throughout the construction period.

Kategorisering

Type prosjekt	Nybygg
Hovedkategori	Infrastruktur
Underkategori	Jernbaner

Fase: Bygging

Byggestart	2025
Ferdigstilles	SLUTTEN AV 2029

Adresse

Verdi og størrelse

Kontraktsform	Ukjent
Prosjektverdi	150 mCHF
Pris per kvm	Ukjent
Areal	Ukjent

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2100 meter

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Kilder

14. Jul 2025: Implenia

Ligerz Tunnel: Anleggsteknisk kapasitet i en multipack. Blant bortgjemte vinmarker og pittoreske vinlandsbyer realiserer Implenia et banebrytende pros...

https://implenia.com/no-no/media/artikel/ligerz-tunnel-anleggsteknisk-kapasitet-i-en-multipack/

21. Mar 2025: Implenia

Tunnel Ligerz, Lot 2. The project comprises the construction of the 2.1 km long twin-track tunnel in Ligerz. The total contract value is CHF 220 milli...

https://implenia.com/en/references/detail/ref/tunnel-ligerz-lot-2/

Oppdateringer

14. Jul 2025

Byggestart endret fra SEPTEMBER 2024 til 2025
Ferdigstillelse endret fra DECEMBER 2026 til SLUTTEN AV 2029
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21. Mar 2025

Byggestart lagt til: SEPTEMBER 2024
Ferdigstillelse lagt til: DECEMBER 2026
Prosjektverdi lagt til: 150 mCHF
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