More on KentOnline
A section of the A2 was closed on the coastbound carriageway after an oil spillage.
It happened between Bexley and the M25 Junction 2 for Darenth.
National Highways contractors attended to assist with the clear-up works.
A spokesperson has conformed the road has now reopened and delays have started to ease.
People are still being advised to allow extra time for their journeys.