WORK will start on Monday night to improve the A120.
Speed limit signs are being installed overnight between Braintree and Marks Tey for the rest of this week and road surfacing work will also be completed.
A full road closure will be in force between Marks Tey and Braintree on Tuesday, Wednesday and Thursday to carry out the work between 8pm and 6am.
A new 50mph speed limit will be enforced on the Coggeshall bypass from Saturday.
The Highways Agency has appealed to drivers to plan their journeys before they set out.