A470 Ffrwd Road is closed after an accident at the A465 Heads Of The Valleys Road (Cefn Coed Roundabout).
More top news
The Wales wing is due to have surgery this week after suffering the injury during the match against France on Saturday.
The poor weather caused a number of landslides in the Valleys which prompted immediate inspections of old coal tips.
The Met Office has warned drivers of blustery showers, with the possibility of ice, sleet and snow during rush hour.