The Highways Agency says it has filled the hole in the M2 in Kent with 40 tonnes of shingle.
This, officials say, has stabilised the hole and is helping them assess the extent of the problem.
More top news
A registered childminder who left one baby with a serious brain injury and another with a broken leg has been jailed for 16 years.
An "urgent" review is being carried out by police after a rape prosecution collapsed when vital evidence was revealed at the last minute.
A Mercedes driver whose vehicle toppled six feet into somebody's basement has been arrested on suspicion of drink driving.