A494 to A55 improvement proposals (part 2)

A494 - A55 Red option

In the first part I described some of the background into the previous attempt to upgrade the A494/A55 corridor, in this second part I will explain in more detail the "Red option" which is currently preferred by the Welsh Government.

The Red option involves construction of roughly 3.5km of new dual carriageway between the A548 and the A55. The proposal also involves grade separating a number of roundabouts along the A548 which provide access to the Deeside Industrial Park.

A494 looking south toward the A550 interchange and Deeside Industrial Park

Although the Red option primarily involves the construction of a new road, there will be some major works involving interfaces with existing roads. A new junction will have to be constructed on top of the junction where the A550 meets the A494, a junction that itself was only completed in 2009. 

Proposed A550/A494/A548 interchange (Click to enlarge)

Image for demonstrative purposes only, not to scale. Alignment is subject to change. 

It appears as if the new junction will be construction so that the A494-A548 route will be the main route to the A55. I assume that signage and lanes will have to be marked in such a way to direct people travelling from England wishing to access the A55 for Wrexham/Chester/Mold via the A494 and those wishing to access the A55 for the North Wales Coast/Anglesey/Holyhead via the new A548 link.

The A548 at the point where it passes the Deeside Industrial Park will be mostly re aligned with the existing carriageway alignment used for exit/entry slips between the new carriageway and roundabouts.

The dumbbell junction on the A584 for Connah's Quay will also have to be relocated as the carriageway will be re aligned to head North West towards the A55. The section of dual A584 currently ends 500 metres after the junction for Connah's Quay. After that the A548 becomes a single carriageway. The current A548 route does eventually meet the A55 but not until it reaches Pensarn some 38km away.

It will be interesting to note if or how the new A584 - A55 link is numbered if it is constructed.

The Welsh government have identified journey time benefits as one of the main benefits of the Red option over that of the Blue option. However there are other potential benefits, such as supporting the case for a new railway station that is proposed within the Deeside Industrial Park on the Wrexham Bidston railway line.

Proposed Deeside Parkway station, image courtesy of the Wrexham-Bidston Rail Users' Association

It is envisaged that the new station as well as providing access to the industrial park for workers, could also provide park and ride facilities for those travelling from Wales wishing to travel to Liverpool. Rather than driving to Liverpool of Hooton station (on the Merseyrail Wirral line), people could park at and travel from Deeside Parkway.

The other obvious benefit over the Blue option is the fact that a lot of the construction will be off the main carriageway. The Blue option involves working on the live carriageway at a point where congestion is already at its worst.

The Red option also provides a diversionary route if problems arise, concurrently the existing A494 would provide access to North Wales if there were problems on the A548. Currently in reality there is only one main route into North Wales and that is the A494-A55 corridor.

Another element to take into consideration is the replacement of the  A494 Dee bridge "which is in a poor structural condition"[1], there are already separate plans being put into place to replace the existing steel and concrete bridge. Replacing the bridge during or after potentially upgrading the A494 would bring with it further disruption. The Red option would at least provide a diversionary route whilst a new bridge is being built.

A decision is expected this year on whether to go ahead and if so which route to progress, so we won't have long to wait. In the meantime you can see how each of the options would look thanks to videos produced by the Welsh Government.

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A494 to A55 improvement proposals (part 1)

[Update 26/09/17]

"Economy Secretary Ken Skates has today announced the red route as the preferred option for the £250m Deeside corridor scheme." View the full statement at www.gov.wales

Background 

After a decade of delay the Welsh Government looks set to finally make a decision on how best to improve a vital link between England and Wales. The A494 - A55 link is one of the busiest border crossings between England and Wales, with the 2 lane A494 at the point where it crosses the River Dee alone carrying almost as many vehicles as the 3 lane M4 Second Severn Crossing [1][2]

The first plans to improve the link were put forward in 2007 by which time houses had already been compulsorily purchased and to this day many remain empty. The original proposal was for a 7 lane highway consisting of 4 southbound lanes (heading toward Wales), 3 northbound lanes (heading towards England) with hard shoulders and connector distributor roads either side. It was also proposed that the speed limit would be increased from 50mph to 70mph.

Existing A494 at the point where it crosses the River Dee

Just as the proposal looked to go ahead and with the majority of the land already in government hands the plans were scrapped after fierce public opposition. It was said the proposal which in places would be 11 lanes wide were excessive and disrupted too many people. It was claimed that 5000 people would be adversely affected.

The decision to cancel the proposal as it stood at the time may have had merit, unfortunately though the Welsh Government were slow to come up with an alternative and in the proceeding 10 years traffic levels have increased and congestion between the A494 and A55 has worsened, especial during holiday periods.

New proposals

Two proposals have been put forward by the Welsh Government, one known as the Blue option an adaptation of the original proposal to widen the A494 and upgrade junctions including the  A494/A55 interchange.

The other proposal known as the Red option would bypass a large section of the A494 and the A494/A55 interchange. This would be achieved with the construction of a new section of dual carriageway between Flintshire bridge and the A55 close to junction 33 near to Northop. The flat junctions along the A548 which links A494 to Flintshire bridge would also be grade separated.

Proposed Red and Blue options (source  Deeside Corridor improvement study)

The public consultation for both proposals ended on the 30th of June 2017 with the preferred route expected to be announced this summer. However the Welsh government has already signalled that it prefers the second opinion or what is known as the Red Option. Both options would have a budget of around £200m, however the Red option promises a better benefit to cost ratio and improved journey times.

The A548 Flintshire Bridge

On a more symbolic note, the Red option would see the realisation of a long talked about link from Flintshire bridge which for the last two decades has been known locally as "the bridge to nowhere" to the A55.


The consultation document can still be found here.


Part 2 of the blog descibes the Red option in more detail

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