Some motorists trapped overnight were caught in treacherous conditions on the M23 in Sussex and on the A23 in Kent
Here are the details of some of the roadworks planned in the South for the coming week.
Ryanair should have compensated passengers whose flights were cancelled because of volcanic ash in 2010, the EU's top court has found.
Two lanes are closed causing long delays on the M3 northbound between junction 13 for the A335 (Chandler's Ford) and junction 12 for the A335 (Eastleigh). There's congestion to junction 14 for the M27. Three cars have been involved in the collision which happened just before 9am.
Good to hear re-opening of Sonning Bridge is improving journey times across the constituency this morning.
The Sonning Bridge crossing over the River Thames near Reading has reopened for its first morning rush hour in more than 6 weeks. It was shut because of flooding on neighbouring approach roads.
The B478 Playhatch Road accessing Sonning Bridge shut down on 2nd February. Now the road has reopened with temporary traffic lights in place. The Grade 2 listed Sonning Bridge was built in 1774.
One lane is blocked on the A24 Worthing Road southbound in West Grinstead due to a lorry fire near the B2135 Steyning Road.
There's been an accident on the M20 London bound between junction 5 for the A20 (Aylesford) and junction 4 for the A228 (Leybourne/Snodland). At the moment no delays have been reported and all vehicles involved are on the hard shoulder.
It's being reported two dogs are in the middle of Milton Road in Adderbury between St Mary's Road and Bareford Road. Motorists are warned to take extra care.
Disruption is possible to flights to and from Southampton Airport due to the fog. Passengers are advised to check the status of their flight with their airline. Delays and cancellations can be expected.
Wightlink has suspended its service between Lymington and Yarmouth due to the fog. Sailings are currently on hold.
The A41 in Bicester is blocked at B4100 London Road/Seelscheid Way as recovery work continues due to an earlier accident involving a lorry. The vehicle is blocking the Rodney House roundabout after going straight over it in the fog.
Traffic is able to go northbound onto the A421 but not straight over on the A41.
Video. Thousands of drivers and scores of businesses in the Thames Valley are celebrating tonight because a main commuter route is opening after weeks of flooding. The B478 Playhatch Road accessing Sonning Bridge shut down on 2nd February. The Grade 2 listed bridge was built in 1774.
It is an essential crossing on the busy commuter route between Berkshire and Oxfordshire and carries an estimated 16,000 commuters a day. The closure caused mass congestion as drivers were forced to use three other bridges in the area- Reading Bridge, Caversham Bridge and the bridge at Henley.
It was feared the road and bridge would remain closed unless the government found £1 million needed to fix it. But the floods have receded and engineers say it is safe to re-open the bridge to the single-lane traffic.
Mike Pearse spoke to Robin Islam, a restaurant manager, Michael Emmanuel, manager of The French Horn, Nick Collins, a plumber and Councillor David Nimmo-Smith from Oxfordshire County Council.