UPDATE 4pm
Traffic continues to be heavy on M4 eastbound between J29 A48(M) and J26 Malpas Road.
A48 busy but moving westbound between Ebbw Bridge Roundabout and Tredegar Park.
Slow traffic on M4 westbound between J24 Coldra and J26 Malpas Road.
UPDATE 1.51pm
Stop-start traffic for seven miles on M4 eastbound between J30 Cardiff Gate and J26 Malpas Road. Travel time is between 45 and 60 minutes.
There is also slow traffic on the M4 westbound between J24 Coldra and J26 Malpas Road.
11.15am
TRAFFIC delays are currently building up on the M4 through Newport this morning.
Congestion is building eastbound between junction 29 at Castleton as drivers go through Gwent up to junction 26 at Malpas, just before the Brynglas Tunnels.
The stop-start motorway traffic has been geeting worse for the past half an hour and is at its peak from junction 28 at Tredegar Park and junction 27 at High Cross.
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