Last updated: 12 March 2018

Where & Why?

Work to install the noise mitigation barrier has progressed well and is expected to be completed by 20:00 on 16th March 2018. The overall completion date has been extended from 12th March to 29th March in order to carry out additional resurfacing works, drainage works and repairs to the hard shoulder. For safety reasons, the temporary 40mph speed limit will remain in place until the 22nd March before returning to the 70mph speed limit.

It has always been planned that the westbound carriageway in the area of the works would be resurfaced following the completion of the scheme.  

Carriageway Closures and Diversions

Both lanes westbound from J24 to the eastern extent of the noise mitigation works for a length of 2.7km will therefore be resurfaced. This will ensure the resilience of the carriageway and reduce the requirement for future maintenance works and traffic management along this section of the network, which will minimise disruption to the travelling public.

In order to carry out the resurfacing, a full closure of the westbound carriageway between J24 and J23 is required nightly between 16th and 29th March 2018 (20.00 and 06.00hrs).  A diversion will be in place via the exit slip road at Junction 24, along the A547 through Abergele and Llanddulas, to re-join the A55 via the westbound entry slip road at Junction 23.

Vehicles over 3m wide will be prohibited from using the alternative route and will be parked up overnight until the traffic management is removed.

Programme of traffic management restrictions                                   


Project information

Start date and time**

End date and time**



Narrow lanes to be in place between J24-J23





Narrow lane traffic management.

Abnormal loads to straddle both lanes.


Full closure





Overnight works.

Vehicles over 3m are prohibited from travelling along the diversion route

** dates provisional, potential to change


For further information, please contact the North & Mid Wales Trunk Road Agent (NMWTRA)] on 0300 123 1213 or refer to the website or Twitter @TrafficWalesN / @TraffigCymruG.