The M4 motorway remains closed eastbound between junction 24 and 28 as work continues to clear the crash site.
Two westbound lanes have now re-opened.
Gwent Police says work is ongoing to fully reopen the motorway as soon as possible.
More top news
The former nurse became an "active cannabis dealer" in the market town of Pwllheli, a court heard.
Welcome to the Newsweek Quiz - where we'll be testing your knowledge from the last seven days of news here in Wales.
As far as today goes, the south is enjoying the best of the sunshine. Always a few showers possible in the north.