Work to improve Stirling Corner and the M1's northbound carriageway will begin this month.
Improvement works to the M1 northbound between junction 6 with the A405 and the M25 will begin on Monday and are due to be completed by the morning of Tuesday, April 15.
Once this is completed, work will start on the A1 northbound between the Stirling Corner Roundabout on Tuesday, April 15.
This also includes work to junction 23 of the M25, and will finish on Friday, May 9.
Diversions will be in place and work will be held between 10pm and 5.30am on Monday to Thursdays, and between 11pm and 6am on Fridays.