NEC Project of the Year 2017 finalist: A4232 Eastern Bay Link

Highly commended

Name of Project: A4232 Eastern Bay Link

Value: £40m

NEC3 contracts/options used: NEC3 Professional Services Contract (PSC) and Engineering and Construction Contract  (Option C) for Early Contractor Involvement Design and Build Contract

Start-finish dates: January 2015 – May 2017

Main project team:
  • Welsh Government – Client
  • Dawnus Ferrovial Agroman (DFA) Joint Venture – Contractor
  • WSP Parsons Brinckerhoff – Employer’s Agent
  • Corderoy – Employer’s Cost Consultant
  • TACP – Employer’s Environmental Consultant
  • CAPITA – Contractor’s Lead Designer
  • Cass Hayward – Contractor’s Specialist Bridge Designer

Project scope:
The £57.3m Eastern Bay Link (EBL) scheme extends the A4232 link road around the southern perimeter of Cardiff from Queensgate Roundabout to Ocean Way Roundabout through Cardiff docks. The EBL provides the next section of the link and removes the need for traffic to negotiate the current 3½ km route via Central Link, East Tyndall Street and Ocean Way.

The strategic link road is a 1.2km long elevated dual carriageway and the conceptual design was based on the provision of two approach embankments and a viaduct of composite construction approximately 180m long. Due to the poor ground conditions it was envisaged that the embankments would need to be piled. Site constraints required a large part of the approach works to be contained by retaining walls. Alteration works including additional signalisation were required to both roundabouts together with diversion of the main dock road.

The main risks were considered to be acquiring the required land, poor ground conditions including areas of contamination, site restraints due to the immediately adjacent CELSA live railway and working dock roads, and phasing of major service diversions. An ECI contract for the design and construction of the road was let to the DFA Joint Venture in January 2015.

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