The River Dee viaduct on the busy A483 trunk road between the Halton roundabout near Chirk and Ruabon is closed overnight until Friday.
All traffic, including HGVs, face a diversion taking them to Llangollen and back on the A5 and the A539. It will mean the town of Llangollen will see lorries travelling through the centre of the town throughout the night.
The length of the diversion route has had to be extended because of the long term closure of the B5606 from Newbridge to Cefn Mawr.
1/2🚧A483 River Dee Viaduct Structural Safety Inspections 06/09-10/09🚧— Traffic Wales North & Mid #KeepWalesSafe (@TrafficWalesN) September 6, 2021
Diversion route for the A483 over-night closures is via Llangollen on the A5 & A539.
The diversion route has been extended due to a landslip on the B5606.
A major landslip occurred along the B road during Storm Christoph in January. Structural repairs to the road are needed before the road can be re-opened and local politicians are urging the Welsh government to provide funding for the work.