The final piece of work, which was completed last week, saw embankment, drainage and fencing repairs at junction 29 Crown Interchange.
The package of work, which included new road markings, installing new road signs, replacing sections of safety barrier and resurfacing sections of the roads, started in November and was completed ahead of schedule, by the end of May.
This work is part of Highways England’s commitment in the region to improve safety and ensure better journey experiences across the East region’s busiest roads.
Highways England service delivery team leader, Aran Nugent, said:
I’d like to thank drivers for their patience while we carried out this important work and I’m pleased to say we have now finished ahead of schedule.
This work will make the journeys better for local people and the drivers that use this road each day.
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.