A47 Thickthorn junction

This scheme will improve the junction between the A47 and the A11.

Region:  East
Start date:  2020-21
Cost:  TBC
Status:  PLANNED
Type:  Major Scheme
End date:  TBC
Programme:  A47 corridor improvement programme

Progress report

The statutory consultation on our proposal to upgrade the A47/A11 Thickthorn junction has now closed.

We have been reviewing and considering the feedback you've provided through the consultation. Where appropriate, we are using the feedback to make further refinements to our proposed design and development of mitigation measures.

Whilst further design refinements may continue during our conversations with key stakeholders and as further survey results become available, we have issued a project update and a refined junction design.

We will be undertaking important surveys and archaeological trial trenching from this summer (2020). You can expect to see survey vehicles and equipment in operation close to Thickthorn junction, but please note that this is not the start of any construction work.

The investigations will help us better understand any local archaeology and give us information on how we may need to adjust the junction layouts. The surveys are critical for ensuring that we limit any possible impacts by fully recording all archaeological sites. The results of the surveys will be reported in our Environmental Statement and are a normal part of the development consent process.

This type of early survey work will help us to avoid any unexpected surprises and unnecessary delays once construction starts. It also means we can develop a plan for mitigation work and construction to coincide on site once the project is given the go-ahead.

What's next?

We expect to submit our application for development consent early next year (2021). The application will include a consultation report which will feature a summary of responses and will describe which suggestions we were able to incorporate. This will demonstrate how we have listened to feedback.

Our application for development consent will be available to the public on the Planning Inspectorate’s website after its submission.

Please watch our video for more information on the Development Consent process.

Timeline

Date Event
March to April 2017 Non-statutory public consultation
August 2017 Preferred route announcement
June 2019 to July 2019 Statutory public consultation
2021 Development Consent Order application submitted to the Planning Inspectorate. You'll have further opportunity to comment on the scheme at this stage
2024-5 Open for traffic

Why we need this scheme

The A47/A11 Thickthorn junction is important for commuter, business and commercial traffic, on both short and long-distance journeys.

Planning permission granted for new developments in Cringleford and Hethersett is expected to increase traffic demand at Thickthorn junction and the A11/Round House Way junction significantly by 2026. Without the scheme, traffic is expected to exceed the junction’s capacity at both locations. Increased congestion in the future is likely to limit economic growth in Norwich and South Norfolk and affect motorists.

Aims

The aims and objectives of the A47/A11 Thickthorn junction scheme are to:

  • increase economic growth in Norwich and the surrounding area
  • improve road safety for motorists and for those living near the junction
  • reduce congestion, make journey times more reliable, and increase capacity for future traffic growth
  • help the road cope better if there are vehicle collisions or breakdowns, and during road maintenance
  • help support regional housing growth
  • help protect the environment by minimising adverse impacts and, where possible, deliver benefits
  • improve local communities access to the road network
  • provide a safer route between communities for cyclists, walkers, horse riders and other non-motorist groups

The scheme in detail

Our revised layout that we intend to submit for planning approval includes:

  • a single-lane free-flowing link road connecting the A11 northbound to A47 eastbound via two underpasses (under the A11 and A47 respectively)
  • improvements to the junction:
    • widening the existing slip road on the A47 westbound and building a dedicated left-hand free flow lane to the A11 southbound.
    • widening the southern section of the roundabout from three lanes to four
    • new traffic lights on the approach to / from the junction with the B1172 Norwich Road
    • new road surface, new road signs and road markings throughout the junction
    • removal of the Cantley Lane South direct connections between the A11 and A47 exit slip roads
  • a new link road connecting Cantley Lane South with the B1172 Norwich Road to the north and construction of two new bridges. The new link road will have a 40mph speed limit
  • from the Thickthorn junction to Hethersett, a 40mph speed limit on the B1172 Norwich Road and a new junction connecting to Cantley Lane Link road.
  • a 30mph speed limit on Cantley Lane South
  • a new junction connecting Cantley Lane South to Cantley Lane link road
  • the existing Cantley Lane stream and access track will be realigned and one new stream culvert constructed
  • a new footbridge over the A47 for walkers, cyclists and horse riders approximately 45m east of the existing footbridge (which will be demolished). The footbridge will have higher railings to help improve safety for horse riders
  • paths for walking and cycling proposed along the new Cantley Lane link road giving access to local amenities and links to other recreational routes
  • access to the Park and Ride from the Cantley Lane link road for walkers and cyclists

If your property may be affected by one of our schemes

Sometimes the development of one of our road improvement schemes creates an impact on the properties of people living along or close to the route of the scheme. There are a number of examples where this may be the case – for instance, the sale value of a property may be adversely affected by the change in the environment around it. This could be because of additional noise from a new road, or a significant change in view from the property.

There are a number of documents that explain your rights in circumstances such as these, and set out examples in which you may be entitled to compensation:

Project media files and documents

There are no images for this project

Project timeline

Planned roadworks

Roadworks and Events for England

The latest incident information for England's motorway and trunk routes provided by Highways England

Location : The A47 westbound between the A1064 and the junction with the A146 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 12 August 2020 to 14 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 8, 2020, 3:30 pm
Location : The A47 eastbound exit slip to the A11 . Reason : Emergency roadworks are planned. Status : Pending. Schedule : From 09:30 on 10 August 2020 to 15:30 on 10 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 8, 2020, 3:30 pm
Location : The A47 eastbound entry slip from the A11 . Reason : Emergency roadworks are planned. Status : Pending. Schedule : From 09:30 on 10 August 2020 to 15:30 on 10 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 8, 2020, 3:30 pm
Location : The A47 westbound exit slip to the A1042 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 10 August 2020 to 12 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 8, 2020, 3:30 pm
Location : The A47 westbound exit slip to the A1042 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 12 August 2020 to 14 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 8, 2020, 3:30 pm
Location : The A47 westbound between the A1064 and the junction with the A1042 . Reason : Roadworks scheme is planned. Status : Pending. Schedule : From 20:00 on 10 August 2020 to 06:00 on 14 August 2020.
Posted: August 8, 2020, 3:30 pm
Location : The A47 westbound entry slip from the A1042 . Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 10 August 2020 to 12 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 8, 2020, 3:30 pm
Location : The A47 westbound entry slip from the A11 . Reason : Emergency roadworks are planned. Status : Pending. Schedule : From 09:30 on 10 August 2020 to 15:30 on 10 August 2020. Lanes Closed : All lanes will be closed.
Posted: August 8, 2020, 3:30 pm
Location : The A47 westbound exit slip to the A11 . Lane Closures : Lane one will be closed. Reason : Emergency roadworks are planned. Status : Pending. Schedule : From 09:30 on 10 August 2020 to 15:30 on 10 August 2020. Lanes Closed : There will be one of two lanes closed.
Posted: August 8, 2020, 3:30 pm
Location : The A11 southbound between the junctions with the A47 and the A1075 . Lane Closures : Lane two will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 10 August 2020 to 15 August 2020. Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 August 2020 to 22 August 2020. Schedule : Expect disruption everyday between 20:00 and 06:00 from 24 August 2020 to 29 August 2020. Lanes Closed : There will be one of two lanes closed.
Posted: August 8, 2020, 3:30 pm
Location : The A11 southbound between the junctions with the A47 and the A1075 . Lane Closures : Lane one will be closed. Reason : Emergency roadworks are planned. Status : Pending. Schedule : From 09:30 on 10 August 2020 to 15:30 on 10 August 2020. Lanes Closed : There will be one of two lanes closed.
Posted: August 8, 2020, 3:30 pm
Location : The A11 northbound between the junctions with the A1075 and the A47 . Lane Closures : Lane one will be closed. Reason : Emergency roadworks are planned. Status : Pending. Schedule : From 09:30 on 10 August 2020 to 15:30 on 10 August 2020. Lanes Closed : There will be one of two lanes closed.
Posted: August 8, 2020, 3:30 pm
Location : The A11 northbound between the A1075 and the junction with the A47 . Reason : Roadworks scheme. Status : Currently Active. Period : from 20:00 on 4 August 2020 to 06:00 on 29 August 2020.
Posted: August 8, 2020, 3:30 pm
Location : The A11 northbound between the A1075 and the junction with the A47 . Lane Closures : Lane two will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 10 August 2020 to 15 August 2020. Schedule : Expect disruption everyday between 20:00 and 06:00 from 17 August 2020 to 22 August 2020. Schedule : Expect disruption everyday between 20:00 and 06:00 from 24 August 2020 to 29 August 2020. Lanes Closed : There will be one of two lanes closed.
Posted: August 8, 2020, 3:30 pm

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The M5 through the West Country is currently experiencing severe delays southbound.
Posted: August 8, 2020, 1:44 pm

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