Road users in Surrey are advised that the southbound A3 will be closed through the Hindhead Tunnel tonight, between 9pm and 6am, for technical repairs to signage.
A clearly signed diversion will be in place via a contraflow through the northbound tunnel.
Drivers planning to use this section of the A3 are advised to plan their journeys and allow extra time to reach their destinations.
Members of the public should contact the Highways England customer contact centre on 0300 123 5000.
Journalists should contact the Highways England press office on 0844 693 1448 and use the menu to speak to the most appropriate press officer.