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    Mersey Tunnels £15M ventilation works: design and safety notes for engineers

    August 6, 2026|

    Reviewed by Joe Ashwell

    Mersey Tunnels £15M ventilation works: design and safety notes for engineers

    First reported on New Civil Engineer

    30 Second Briefing

    Merseytravel has launched a £15M procurement for a single contractor to deliver early contractor involvement, detailed design and remedial works at eight ventilation stations serving the Kingsway and Queensway road tunnels under the River Mersey in Liverpool. The contract will cover refurbishment of ageing mechanical and electrical ventilation plant, structural repairs to ventilation buildings and shafts, and upgrades to control and monitoring systems. Engineers will need to manage works around live traffic, legacy tunnel infrastructure from the 1930s and 1970s, and strict operational air quality and fire-life-safety requirements.

    Technical Brief

    • Early contractor involvement phase is explicitly bundled into the works contract rather than procured separately.
    • Safety-critical nature of the ventilation assets implies close alignment with current UK road tunnel fire and life-safety guidance.

    Our Take

    With eight ventilation stations spread across the Kingsway and Queensway Tunnel estate, contractors will likely need to sequence works to maintain operational redundancy, a pattern seen in other safety-tagged tunnel projects in our infrastructure coverage where staged outages are essential to keep traffic flowing.

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    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.

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