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A55 : Westbound : J17 Conwy Morfa to J16A Dwygyfylchi

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A55 : Westbound : J17 Conwy Morfa to J16A Dwygyfylchi : Cyclic maintenance : Tunnel closed : Temporary traffic lights : Delays possible : 07/09/26-09/09/26 1900-0700 :
Type of event: Roadworks
Severity of disruption: Severe
Start Date: 07/09/2026
End Date: 09/09/2026

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First Published
25/08/2026 10:47
Reference Number
RNMDA_2026131399
Last Updated
25/08/2026 10:47
Source Agency
Welsh Government
Connect with Traffic Wales