A11 Thetford to Attleborough resurfacing works
We're carrying out essential resurfacing work on the A11 between the A1075 roundabout at Thetford and the Ellingham Junction at Attleborough on the northbound and southbound carriageways. During this work, we’ll also be refreshing faded road markings, doing drainage work and replacing safety barriers, damaged signs and reflective road studs (cat's eyes).
By ensuring we fully restore the road surface on this stretch of the A11, we'll increase the life expectancy of the road and make journeys safer for motorists.
We plan to complete these works over five months, from Monday 4 January 2021 to late June 2021, subject to weather conditions.
The resurfacing work is split into phases, which overall will take six months in total. The phases are shown below.
Phase 1 (January)
Work starts on A11 lane closures between Thetford and Attleborough, in both directions, starting Monday 4 January to Monday 18 January for 2 weeks. The road will remain open during this period, but there will be lane closures.
Phase 2 (January)
The northbound A11 will have one lane open to traffic overnight from 26th to 30th January, and the southbound A11 will be open to traffic overnight (one lane only) on the 31st January, both north and southbound will be running single lane only in the day time on the above dates, with contraflow commencing on 1st February.
Phase 3 (February)
A two-way contraflow will be in place on the A11 between the A1075 Thetford roundabout and Fen Street roundabout, Attleborough for 3 weeks whilst we do our work, starting from Monday 1 February until Wednesday 24 February.
There will then be two overnight road closures on A11 between the A1075 roundabout in Thetford and the Fen Street roundabout in Attleborough, from 8pm to 6am on both Wednesday 24 February and Thursday 25 February respectively.
Following that, a two-way contraflow will again be in place on the A11 between the A1075 Thetford roundabout and Fen Street roundabout, Attleborough for 2 weeks whilst we do our work, starting from Friday 26 February until Wednesday 10 March.
Phase 4 (March to June)
Overnight closures on the A11 between A1075 roundabout at Thetford and Ellingham junction in Attleborough in both directions for 15 weeks. The road will be closed overnight daily from 8pm – 6am, starting from Monday 15 March until late June.
We will be doing extensive resurfacing work on this stretch of road so that motorists and the community can enjoy a better road surface, and so that we can make efficiencies by doing all the resurfacing work in one go. That way, we won’t have to close the road again for resurfacing repairs for a number of years.
Our roadworks will be either south or north of Snetterton Industrial Site to ensure HGVs can access it. The latest road closures and locations are available on Twitter @HighwaysEAST.
We have our two diversion routes, depending on whether the roadworks are north or south of Snetterton. See the maps section below.
The diversion route will need to be used during the full road closures only. We have closely liaised with the local authority to agree the most suitable diversion routes for each phase as shown below:
Southbound traffic will be diverted from Thickthorn Junction via the A47/Norwich Southern Bypass and follow the A140, then the A1066, before re-joining the A11 at Thetford.
Southbound HGV’s and vehicles over 4.7 metres/15.6ft will be diverted from Thickthorn Junction via the A47/Norwich Southern Bypass and follow the A140, the A143, before joining the A14 at junction 38.
Northbound traffic will follow the same route but in reverse.