Celtic Manor

Alun Griffiths chose Cleveland Bridge to fabricate, supply and install a new bridge, to be built immediately east of the existing motorway bridge. The two bridges will each provide one-way access for traffic either entering or exiting the resort and convention centre.

  • Year: 2019
  • Location: Wales
  • Client: Alun Griffiths (Contractors) Ltd
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The five-star Celtic Manor Resort opened a new 5,000-delegate International Convention Centre. The existing single-lane bridge over the M4 used to access the site would be inadequate for the increased volume of traffic, so a new bridge was needed to be built over the M4 ahead of the opening date for the new centre.

150 Tonne

Total steel weight


Length of weathering steel box girders


Single overnight closure


Cleveland Bridge fabricated, supplied and installed a new bridge, to be built immediately east of the existing motorway bridge. The 150-tonne bridge was constructed from 2.3m-wide weathering steel box girders measuring 50.5m long.



The biggest challenges were the proximity of the bridge site to an extremely busy stretch of the M4 and a major interchange roundabout, and the proximity to the world-class Celtic Manor venue, which had to remain open and accessible to visitors throughout the works.


The lifting and installation went without a hitch, enabling the road to be handed back at 6:30am on Monday – ahead of the planned 8am reopening. This meant rush hour traffic could use the road sooner than expected.

It’s a huge testament to the planning and thought that went into last night’s operation that we had no complaints whatsoever from Celtics Manor’s guests or local residents.

Russell Philips Vice President of Facilities and Development at Celtic Manor

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