Drivers are being advised to take care after a road in Oxfordshire split into two.
The route near Hinksey Hill is now partially closed while engineers try to repair the enormous crack in the tarmac. It's thought the wet weather is to blame.
The Environment Agency is warning there may be further flooding in the area. Kate Bunkall reports.
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A further 85 buses are expected to arrive on Tuesday and Wednesday, with officials saying the entire operation will last at least a week.
The government will make an announcement about whether Heathrow or Gatwick should be awarded a new runway at 12.30pm today.
Tuesday morning's weather for the west of the region