The A23 at Pyecombe has reopened southbound, after being closed for nearly three hours, following a crash this morning.
A lorry overturned and shed its load of rocks just after 9am, crashing with a BMW car.
A crane was used to move the lorry upright before the road was examined for damage.
The driver of the BMW suffered a minor hand injury.
The lorry driver was uninjured.
Anyone who witnessed the crash is asked to contact Sussex Police online here quoting serial 241 of 18/05.