There will be a clearly signed diversion route via the B2244.
Drivers using these sections of the A21 are advised to plan their journeys and allow some extra time to reach their destinations.
Live traffic information is available on the Highways Agency’s website and mobile app, and drivers can also listen to traffic bulletins on local radio for updates.
Members of the public should contact the Highways Agency Information Line on 0300 123 5000.
Journalists should contact the Highways Agency press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.