Plans revealed for major road junction upgrade outside Norwich

New proposals for major upgrade of thickthorn junction near Norwich. Credit: Highways England

Highways England has revealed its latest plans to improve a major road junction near Norwich.

The proposed changes to the Thickthorn junction, where the A47 meets the A11, is part of a £300 million series of upgrades along the A47 corridor between Peterborough and Great Yarmouth 

Highways England says the changes will improve journey times by up to six minutes.


The date the work will be finished


Drivers use the Thickthorn roundabout every day

53,000 drivers use the Thickthorn junction daily. Credit: ITV News Anglia

We’ve continued to refine our plans for the A47, so we can deliver the best possible improvement for this junction. We know that there is a lot of support for this improvement, and these changes show how we’re taking onboard people’s feedback to deliver what is needed. This upgraded junction is one of six schemes we’ll be doing to improve the A47 between Peterborough and Great Yarmouth.

Peter Havlicek, Highways England

Highways England announced its preferred option for upgrading the Thickthorn junction in August 2017.

Plans for upgrade to thickthorn junction, Norwich. Credit: Highways England

The plans have now been refined based on feedback from the public consultation:

  • A previously proposed A47 westbound to A11 southbound free-flow link road has been replaced with a dedicated free-flow left turn lane at the roundabout.

  • Traffic lights will be installed on the B1172 arm of the Thickthorn roundabout, while a fourth lane will be added to the southern half of the roundabout.

  • The B1172 will also have a reduced speed limit of 40mph between the junction and Hethersett, improving safety.

  • Existing junctions to and from Cantley Lane South to the A11 and A47 will be closed, and replaced with better, safer access via a bridge over the A11 to the B1172.

  • A footbridge for pedestrians, cyclists and horses has moved closer to its original position, reducing the journey time and providing a safe dedicated crossing of the A47 for those users.

  • A new, free-flowing link road created for drivers heading from the northbound A11 to the eastbound A47 will allow drivers to avoid using the roundabout.

A map showing the A47 from Peterborough to Great Yarmouth. Credit: Highways England
  • Three sections of the 115-mile stretch of the A47 between Peterborough and Great Yarmouth will be upgraded to dual carriageway.

  • Norfolk sections will be upgraded between Blofield and North Burlingham and from North Tuddenham to Easton.

  • In Peterborough the A47 between Wansford and Sutton will also be dualled.

  • There will be further junction improvements at the A141 roundabout in Guyhirn and also in Great Yarmouth.