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Traffic Wales information line 0300 123 1213

Rydym yn croesawu galwadau’n Gymraeg | We welcome calls in Welsh

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The Welsh Government’s traffic information service for motorways and trunk roads in Wales

A487 Caernarfon to Bontnewydd Bypass

Start date: 01/02/2023 | End date: 04/02/2023

A487 Caernarfon to Bontnewydd Bypass. Overnight closures to carry out structure inspections.

01/02/23 - 02/02/23 22:00 – 05:00

Closure of the A487 Caernarfon bypass in both directions for one night between Goat roundabout and Meifod roundabout to carry out structures inspections.

02/02/23 - 04/02/23 22:00 – 05:00

Closure of the A487 Caernarfon bypass in both directions for two nights between Meifod roundabout and Cibyn roundabout to carry out structures  inspections.

01/02/23 - 02/02/23

Diversion route will be via the A4871 through Dinas and Bontnewydd villages.

02/02/23 - 04/02/23

Diversion route will be via the A4871 through Pwllheli Road and the A4086 Llanberis Road.

For further information, please contact Traffic Wales on 0300 123 1213 or via Twitter @TrafficWalesN


Call the Traffic Wales information line
0300 123 1213

Rydym yn croesawu galwadau’n Gymraeg
We welcome calls in Welsh

Contact us