Welsh ministers look to rebid £1.3bn M4 relief road

Aaron Morby 3 months ago
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The Welsh Government is considering rebidding the £1bn M4 corridor project around Newport in Wales.

400m cable stayed bridge could be let as a single separate contract under cost-saving plan

A joint venture between Costain and Vinci scooped an early contractor involvement deal four years ago for the massive scheme.

Since then there has been growing concern about the high risks and associated costs of delivering the 24km scheme, which includes a 440 m span cable stay bridge south of Newport.

It was originally believed the project could be delivered for £400m, this rose to around £1bn a few years ago and it is now understood latest cost estimates are up to £1.3bn

Now Welsh Ministers are looking at fresh options to take the massive scheme forward and will shortly consult with contractors on the industry’s appetite for a new cost-saving procurement plan.

The key option is to retender the scheme and split it up into three manageable contracts reducing the risk.

Three new elements for Welsh mega project

  • Highway section Magor to river Usk
  • 400m span cable-stayed bridge over the Usk
  • Highway section Usk to Castleton

They are also thinking about procurement using competitive dialogue to achieve better value for money.

Originally proposed in 1991, the scheme was dropped by the Welsh Assembly in 2009 because of soaring costs.

Plans were resurrected in 2011 when the idea of a toll-motorway was floated but the Treasury indicated it would support a public funding approach last year.

The public inquiry stage has now been completed and a decision whether to proceed to detailed design and construction is expected shortly.

Interested firms can register their interest by emailing the Welsh Government procurement department.

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