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A55 junction with A494 and A548 – Deeside Corridor

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Public information exhibitions are being held to provide an update on the Welsh Government proposals for major improvements to the A55/A494/A548 Deeside Corridor in North East Wales.
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We are looking to improve journey times between the River Dee and Northop Interchange. 


Project status: planned
Region/county: north east Wales
Cost: over £200m dependent on the chosen route
Design consultants: AECOM and Richards, Moorehead & Laing Ltd

Why we are doing it

The A494/A55 between the River Dee and Northop Interchange is a dual 2-lane road. It experiences congestion frequently.

The road experiences more traffic than it was designed for, and is below modern standards. It is poorly aligned and there is nowhere for broken down vehicles to pull off the road. Some of the junctions have slip roads that are too short or too close to the road, some of which have poor visibility. It is at these junctions that the majority of accidents occur.

The aims of the scheme are to:

  • improve capacity, reliability and journey times
  • improve safety
  • improve connections for businesses
  • improve access between residential areas and places of employment
  • reduce carbon emissions along the road
  • make more efficient use of the existing transport infrastructure.

We will minimize the impact of these improvements on local residents, the landscape, air quality, biodiversity and pollution.

Current progress

We have appointed AECOM, supported by Richards, Moorhead & Laing Ltd, to study the possible routes. We are undertaking environmental and engineering surveys.

Environmental and engineering surveys have been carried out as part of assessing the options in accordance with the Welsh Transport Planning Appraisal Guidance (WelTAG).

Proposed Options

Blue option

Red option

The plan

We have assessed 2 options. One is a package of improvements on the existing A55/A494, the 2nd a series of improvements over Flintshire Bridge along the A548 and a new link to the A55 at Northop.


Route selection appraisal: early 2017
Public consultation: March - June 2017
Preferred route announced: summer 2017

How we are consulting

We held public information exhibitions in September 2015. We are undertaking a 12 week public consultation between 13 March to 5 June 2017.

Next steps

Following the public consultation, the Welsh Government will consider the comments received in conjunction with the technical and environmental assessments of the 2 options before a decision on the preferred route is made during the summer of 2017.

For more information contact the project team.

Document Download

Adobe PDF document
Public Consultation Exhibition (File size: 39.8MB)