THE A1 at Stannington, near Morpeth, will re-open to traffic next month.
Since last year, drivers have been diverted on to two slip roads with a 30mph speed limit on either side of the motorway, so that work could be carried out to create a new underpass and two new junctions.
The 5.6m scheme, designed to improve safety at the accident black-spot after a triple fatal accident in 1999, started in September 2003.
The main A1 through road will re-open in June, with two roundabouts and the new junctions at Stannington Village and Stannington Station expected to be ready by Autumn.
The current 30mph speed limit will be raised to 50mph.
Alan Apps, Project Sponsor for the Highways Agency, said: "This is a significant milestone in the development of the new junction. Road users will have the benefit of staying on the main line of the A1 and have the speed limit increased to 50mph.
"Work is progressing well on the Stannington safety scheme and the re-opening of the road over the new bridge is a major step in the development of the new, safer junction."
"There is still a lot of work to be completed.
"Once the road is again opened over the bridge, work will start on completing the roundabouts, underpass and access roads which are an integral part of the scheme.
"Work is still well on schedule for the planned completion date towards the end of the year."
The two slip roads currently in place will be altered slightly to act as part of the new junction.