Starting from 5am Monday 11 November there will be some changes but mainly affecting local traffic but there could be a knock on effect to westbound through traffic.
They are closing the westbound slip into Bar Hill ( where the 3 lanes become 2 towards Huntingdon). Instead local traffic will come off at the previous junction 30 to access Bar Hill.
I am only guessing here but the knock on effect could be that traffic will be squeezing into Lanes 2 and 3 much earlier and not long after the Girton Interchange.
Www.cambridge-news.co.uk has the full story with a diagram.
Just another day in the life of construction of new A14. 
As the A14 Cambridge to Huntingdon Improvement Scheme continues, so do road closures and travel disruption.
This weekend and next week several parts of the road will be shut.
Fortunately, much of this will be overnight, but it is still expected to cause disruption to drivers from around 8pm or 9pm.
Below is a list of all the road closures coming up that you need to know about.
A14 eastbound junction 26 (St Ives) to junction 30 (Dry Drayton)
One night closure (9pm - 6am) between Saturday, November 9 to Sunday, November 10.
A14 eastbound junction junction 26 (St Ives) to M11 southbound
One night closure (8pm - 6am) between Sunday, November 10 to Monday, November 11.
A1 northbound, Brampton Hut to Alconbury
One night closure (9pm - 6am) between Saturday, November 9 to Sunday, November 10.A1 northbound, Buckden to Alconbury
Two night closure (9pm - 6am) from Monday, November 11 to Wednesday, November 13.A1 northbound, Buckden to Alconbury
One night closure (9pm - 6am) from Monday, November 11 to Tuesday, November 12.
A1 southbound Alconbury to Brampton Hut
Two night closure (9pm - 6am) from Monday, November 11 to Wednesday, November 13.A14 eastbound junction 28 (Swavesey) to junction 29 (Bar Hill)
Two night closure (9pm - 6am) from Monday, November 11 to Wednesday, November 13.
A14 westbound junction 30 (Dry Drayton) to junction 28 (Swavesey)
Two night closure (9pm - 6am) from Monday, November 11 to Wednesday, November 13.
A14 eastbound junction 20 (Ellington) to junction 21 (Brampton Hut)
Five night closure (9pm - 6am) from Monday, November 11 to Saturday, November 16.A14 westbound junction 21 (Brampton Hut) to junction 20 (Ellington)
Five night closure (9pm - 6am) from Monday, November 11 to Saturday, November 16.
A1 northbound, Buckden to Brampton Hut
Four night closure (9pm - 6am) from Tuesday, November 12 to Saturday, November 16.
A1, southbound, Alconbury to Buckden
One night closure (9pm - 6am) from Wednesday, November 13 to Thursday, November 14.
A14 eastbound junction 26 (St Ives) to junction 31 (Girton)
One night closure (9pm - 6am) from Wednesday, November 13 to Thursday, November 14.A1 southbound, Brampton Hut to Buckden
Two night closure (9pm - 6am) from Thursday, November 14 to Saturday, November 16).
A14 eastbound junction 26 (St Ives) to junction 29 (Bar Hill)
Four night closure (9pm - 6am) from Thursday, November 14 to Monday, November 18.
A1 northbound, Brampton Hut to Alconbury
One night closure (9pm - 6am) from Saturday, November 16 to Sunday, November 17.A14 westbound junction 24 (Godmanchester) to junction 23 (Spittals)
One night closure (9pm - 8am) from Saturday, November 16 to Sunday, November 17.
It only seems like a few months ago when I was running containers out of CAST in Ipswich that all drivers were surveyed whether or not we wanted a dual carriageway to link Ipswich with the A1.Memories,eh!Doesn’t time fly when you’re having fun.