During working hours (19:00 - 06:00), there will be no access for vehicles between Junction 9 and Junction 11 eastbound. One lane will be closed eastbound during the daytime only.
Proposed programme of traffic management restrictions:
Details of Restrictions | Start Date and Time | End Date and Time | Notes |
Full Eastbound closure of the A55 between J9 Parc Menai and J11 Llys Y Gwynt. Full Eastbound closures of J9 Parc Menai entry, J10 Caernarfon Road exit and entry and J11 Llys Y Gwynt exit slip roads. J9 Parc Menai eastbound exit slip road will be open. | 19:00 05/07/2026
| 06:00 24/07/2026
| Traffic will be diverted eastbound from J9 Parc Menai along the A487, B4547, A4244 and A5 to C11 Llys Y Gwynt.
|
| Single lane eastbound closures between Britannia Bridge and J11 Llys y Gwynt. | 06:00 06/07/2026 | 19:00 23/07/2026 | A lane 1 OR lane 2 eastbound closure will be in place during the day only.
All slip roads will be open during the day. |
** dates provisional, may be subject to change
Traffic will be diverted eastbound from J9 Parc Menai along the A487, B4547, A4244 and A5 to C11 Llys Y Gwynt.
For further information, please contact Traffic Wales on 0300 123 1213 or via Twitter @TrafficWalesN