The B2192 The Broyle between Ringmer and Halland is expected to be closed to traffic for most of today (Wednesday December 10) following a two car collision that brought down power cables.
Police said the crash happened at about 6am near Ringmer.
One of the cars, driven by a 27-year-old Lewes man, sheared through a pole carrying the cables before ending up in a ditch.
The other vehicle was driven by a 49-year-old man from East Dean, who was accompanied by a 46-year-old passenger from Eastbourne. There were no serious injuries.
Engineers called to repair the damaged pole and cables are expecting the work to take several hours.
Anyone who saw what happened is asked to email collision.appeal@sussex.pnn.police.uk or phone 101, quoting serial 163 of 10/12.