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A55 Road, North Wales, UK

UK Highways A55, a consortium comprising John Laing and Carillion Private Finance, designed, built, financed and now operates this 40km trunk road running across the Island of Anglesey (Ynys Môn) in North Wales. The road is the main route to Holyhead, the principal port linking Britain to Ireland and forms part of the strategic E22 Euroroute, which stretches from the Baltic coast to Dublin.


The concession includes operation and maintenance of the route from Bangor on the mainland to Holyhead, part crossing the Menai Straits along the Britannia Bridge. This also includes the secondary loop of the original A5 Menai Crossing using the historic Grade 1 listed Menai Bridge (an additional 6km).

In addition to being an equity investor, John Laing is actively involved in managing the DBFO Company.

The A55 was a landmark deal at the time (1998), financial close being concluded within two months of selection of UK Highways as preferred bidder. The concession period extends to 30 years.

Ongoing activity

Good relations with the local community were fundamental during construction of the A55 Llandegai to Holyhead Trunk Road in North Wales. Regular meetings were held with councillors and community representatives to brief them on the progress and consult on any issues of concern.

In recognition of this close working relationship, the Carillion Laing Joint Venture (UK Highways A55) was given a Considerate Contractor award by the Construction Industry Board.

Maintaining the quality of the environment of Anglesey was a high priority of the construction project, especially as the area impacted upon sites of Special Scientific Interest, locally important conservation areas and many high quality wetland habitats. New habitats were created for water voles, badgers, otters and great crested newts. Nearly 350,000 plants, hedges and shrubs were planted and a new island was created for the local tern colony.

A55 Road, North Wales, UK