Mersey Gateway Bridge
Runcorn and Widnes, River Mersey, UK · 2014–2017 · £1.86bn (total project cost over 30 years, including construction, maintenance and operation); construction cost approximately £600m
The judgement call
Account-gated at launchDelivered £250 million cost saving compared to original engineering estimate through competitive PPP tendering. - Implemented a toll system to finance construction, maintenance, and operation. - Designed for a 120-year lifespan.
Key engineering challenges
Minimising environmental impact on the estuary. - Dealing with significant tidal range and challenging ground conditions. - Rapid construction cycles and long-term durability. - Integration with existing road networks and local infrastructure.
Project facts
- Client / owner
- Merseylink Consortium (Halton Borough Council)
- Lead contractor
- Merseylink Construction Joint Venture (Kier Infrastructure and Overseas Ltd, Samsung C&T Corporation, FCC Construcción S.A.)
- Lead designers
- Flint & Neill (now COWI), AECOM
- Project type
- new build
- Scale
- 2.3 km total length (including approach roads); 1 km dual-three lane cable-stayed bridge; 998m span
- Disciplines
- Civil; Structural; Geotechnical; Environmental
- Standards & frameworks
- Public-Private Partnership (PPP)
Sources: Mersey Gateway Project: https://merseygateway.co.uk/ - Rendel: https://www.rendel-ltd.com/portfolio/mersey-gateway-project/ - AECOM: https://aecom.com/projects/the-mersey-gateway-project/ - Wikipedia: https://en.wikipedia.org/wiki/Mersey_Gateway_Bridge - BBC News (2017): https://www.bbc.com/news/uk-england-merseyside-41586131 - COWI: https://www.cowi.com/projects/a-catalyst-for-growth-in-the-north-west-of-england/