ROADWORKS will lead to sections of major roads in Caernarfon and on Anglesey being closed overnight.
The Traffic Wales website states that the A55 will be shut westbound from 8pm tonight until 5am tomorrow between junction six near Llangefni and junction four at RAF Valley.
The Traffic Wales Twitter feed for North and Mid Wales reports that the Caernarfon flyover on the A487 will be closed southbound from 7pm tonight until 6am tomorrow.
They write: "Diversion route will be via off slip prior to flyover, around A4086 Llanberis road roundabout and up the on slip to re-join the A487 heading south."
Road closures have also been imposed in Caernarfon town centre this week while filming takes place for the Netflix series The Crown.
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