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The eastbound tunnel on the M4 at Brynglas will be closed this weekend for refurbishment.

A diversion will be in place to ease congestion.

The A48 southern distributor road in Newport is the dedicated diversion route for all eastbound or westbound traffic.

The tunnels have been receiving maintenance for several months, closing on weeknights and weekends, from the end of August.

This is the last weekend of repairs that are planned for the tunnel for the next year, although the tunnel will be closed on some nights from Saturday to Sunday in 2018.

(Image: South Wales Echo) (Image: South Wales Echo)

These weekend closures are known to cause huge tailbacks, with some commuters even claiming it took them three hours to reach Cardiff from Bristol Airport.

The Eastbound carriageway will be closed from 8pm October 7 to 6am October 9.