Repairs are underway in Ockley to fix a landslide that caused 40 meters of an embankment to collapse.
The heavy rain over Christmas caused the land between Horsham and Dorking to fall away on Boxing Day.
The repairs are likely to continue until next month as an access road needs to be built for heavy machinery to get through.
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Tuesday evening's weather for the east of the region
Tuesday evening's weather for the west of the region
Highways England thanked people for pointing it out. The A34 sign has now been removed.