The Countess to Solstice Park work along a one mile stretch of the A303 will be carried out over four weekends between 8.00pm Friday and 6.00am Monday.
The Solstice Park to Cholderton work along approximately a three and a half mile stretch will be carried out over 25 nights between 8.00pm and 6.00am.
Project sponsor Paul Vosper said:
This work will ensure these sections of the A303 remain safe and reliable for drivers for many years to come.
Every effort has been made to ensure disruption is kept to a minimum, but we advise road users to allow extra time to complete their journeys.
The Countess to Solstice Park resurfacing is scheduled to start on Friday, 30 January and will be completed by 9 March. No works will be carried out over the weekends of 14 and 15 February or 21 and 22 February during school half-term holidays .
The Solstice Park to Cholderton work will start on the night of Monday, 2 February and will continue Monday to Friday until March 12
To ensure the safety of both the travelling public and our workforce, it will be necessary to fully close these two sections of the A303 to through traffic while the work is taking place and fully signed diversion routes will be in place.
Some day-time lane closures will also be necessary while the works are taking place.
Countess to Solstice Park diversions
A303 westbound, through traffic will be directed to follow Salisbury Road northbound to take the A3028 westbound. Traffic will then take the A345 Countess Road southbound to re-join the A303 westbound at Countess Roundabout.
For those travelling on the A303 eastbound, through traffic will be directed to follow the A345, Countess Road northbound to then take the A3028 eastbound. Traffic will then take Salisbury Road Southbound to re-join the A303 eastbound from the Solstice Park Junction.
Local traffic westbound will be diverted to Solstice Park Avenue, London Road and the A345. Eastbound local traffic will be diverted onto the A345, London Road and Porton Road.
Solstice Park to Cholderton diversions
Traffic travelling on the A303 westbound will be directed from the Parkhouse Junction onto the A338 Southbound. Traffic will then follow the Portway westbound and then the A345 northbound to re-join the A303 at Countess Roundabout. Traffic travelling eastbound will be directed from Countess Roundabout to follow the London Road eastbound to take the A3028 southbound. Traffic will then travel eastbound on the Tidworth road to take A338/Salisbury Road southbound and re-join the A303 at the Parkhouse Junction.
Additional diversion routes for all through traffic east and westbound will be in place between Andover and Wylye via the A343, A30 and A36 and also via the A338.
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.