Geomechanics.io

  • Free Tools
Sign UpLog In
AllGeotechnicalMiningInfrastructureMaterialsHazardsEnvironmentalSoftwarePolicy

Geomechanics.io

Geomechanics, Simplified.

© 2025 Geomechanics.io. All rights reserved.

Geomechanics.io

CMRR-ioGEODB-ioHYDROGEO-ioQCDB-ioFree Tools & CalculatorsBlogLatest Industry News

Industries

MiningConstructionTunnelling

Company

Terms of UsePrivacy PolicyLinkedIn
    Projects
    Contract Award

    Strabag and Arup’s 2.2km Fehmarn Sound tunnel: design and risk notes for engineers

    November 26, 2025|

    Reviewed by Joe Ashwell

    Strabag and Arup’s 2.2km Fehmarn Sound tunnel: design and risk notes for engineers

    First reported on New Civil Engineer

    30 Second Briefing

    Strabag, Arup and partners have secured major construction and design packages for the 2.2km Fehmarn Sound immersed tunnel, the inland section linking Germany’s road and rail network to the Fehmarnbelt Fixed Link. The new tunnel will replace the existing Fehmarn Sound Bridge, removing a key capacity and clearance constraint on the corridor between Puttgarden and Denmark. For geotechnical and structural teams, the award signals imminent detailed design on immersed-tube foundations, marine-ground interfaces and transition structures tying into the main Fehmarnbelt tunnel.

    Technical Brief

    • Design teams now move from reference design to detailed design and constructability optimisation.
    • Interfaces must align with Fehmarnbelt Fixed Link geometry, rail alignment and motorway cross-section standards.
    • Transition structures will manage differential stiffness between immersed tunnel elements and land-based cut-and-cover.
    • Experience gained will inform future immersed-tube replacements of ageing bridge crossings in shallow coastal waters.

    Our Take

    Strabag appears frequently in our Infrastructure coverage for complex underground works, so its role on the Fehmarn Sound Crossing suggests the client is prioritising contractors with deep experience in long marine-adjacent tunnels and challenging ground conditions.

    Among the 166 tag-matched ‘Projects/Contract Award’ pieces in our database, only a small subset involve multi-asset corridors like the Fehmarnbelt Fixed Link plus connecting structures, indicating this 2.2 km tunnel is part of a relatively rare, corridor-scale procurement strategy rather than a standalone asset.

    Arup’s presence on the Fehmarn Sound Crossing aligns with its recurring role in our coverage on large European transport links, which typically brings early-stage influence on alignment, geotechnical risk management and constructability that can materially shape downstream package scopes for other contractors.

    Geotechnical Software for Modern Teams

    Centralise site data, logs, and lab results with GEODB-io, CMRR-io, and HYDROGEO-io.

    No credit card required.

    • Save and export unlimited calculations
    • Advanced data visualisation
    • Generate professional PDF reports
    • Cloud storage for all your projects

    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

    Related Articles

    DSIT’s CNI cybersecurity drive: design and monitoring lessons for engineers
    Infrastructure
    3 days ago

    DSIT’s CNI cybersecurity drive: design and monitoring lessons for engineers

    The Department for Science, Innovation and Technology has expanded its Cyber Runway Critical National Infrastructure programme with innovation accelerator Plexal to bring more cybersecurity SMEs into protecting UK energy, transport, water and digital networks. The scheme targets operational technology and industrial control systems used in assets such as substations, treatment works and tunnels, where legacy SCADA and remote monitoring are increasingly exposed to cyber-physical attacks. For civil and infrastructure engineers, this signals closer integration of cyber risk into asset design, condition monitoring and resilience planning.

    Gatwick PAS 2080 certification: whole-life carbon lessons for project teams
    Infrastructure
    3 days ago

    Gatwick PAS 2080 certification: whole-life carbon lessons for project teams

    London Gatwick has become the first airport globally to achieve PAS 2080:2023 certification for carbon management across its buildings and infrastructure assets. The BSI-verified standard requires quantified whole-life carbon baselines, option appraisal and reduction pathways for capital works, including terminals, piers, pavements and associated civil engineering. For designers and contractors working at Gatwick, future schemes will need to evidence embodied and operational carbon performance alongside cost, influencing material choices, construction methods and asset renewal strategies.

    Northern Ireland DfI AI road stock-take: asset management lessons for engineers
    Infrastructure
    3 days ago

    Northern Ireland DfI AI road stock-take: asset management lessons for engineers

    Northern Ireland’s Department for Infrastructure has commissioned mapping specialist Gaist to deliver a network-wide digital stock-take of its road assets using AI-based condition assessment. High-resolution imaging and machine-learning classification will be used to catalogue carriageway defects, drainage features and street furniture, creating a georeferenced inventory to support maintenance planning amid a mounting roads backlog. For asset managers and pavement engineers, the move signals a shift towards data-driven prioritisation of resurfacing, patching and drainage interventions across the regional network.

    Related Industries & Products

    Construction

    Quality control software for construction companies with material testing, batch tracking, and compliance management.

    Mining

    Geotechnical software solutions for mining operations including CMRR analysis, hydrogeological testing, and data management.

    QCDB-io

    Comprehensive quality control database for manufacturing, tunnelling, and civil construction with UCS testing, PSD analysis, and grout mix design management.