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Discover Roadworks in Your Area
N.B. The map and table below provide the location of ALL roadworks being carried out within the Sizewell C area, not just works being carried out by Sizewell C.
Please hover over or click on the activity icons for further information.
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List of Roadworks
The table below shows roadworks and road closures within the Sizewell C area.
This information was last updated on 19th October 2026 03:44:35 AM
Location | Description | Traffic Management | Start Date | End Date | Responsibility |
|
Old Homes Road |
Leakage. Excavate on existing boundary box and fittings to renew due to leak. And reinstate |
16 October 2026 |
22 October 2026 |
Essex And Suffolk Water |
|
|
School Road |
PROVIDE 1X POLE |
26 October 2026 |
28 October 2026 |
BT |
|
|
Linden Close |
Network Operations Faults: Essential and immediate repair to Low Voltage single service cable affecting customers supply. Additional work may be required to safeguard supplies: EXCAVATION FOR A SERVICE FAULT |
15 October 2026 |
21 October 2026 |
UK Power Networks |
|
|
Blythburgh Road |
WESTLETON V28006 - Build 1 D149348 - Overlay – Lay approx m of Duct 54/56 in verge / footway to link existing BT Boxes to facilitate spine cabling works. |
Traffic control (two-way signals) |
19 October 2026 |
22 October 2026 |
BT |
|
Eastbridge Road |
SZC0711 - LEISTON 1384532 - To build new FW / CW / Verge joint box and lay approx 50m of Duct 54/56 in FW / CW / Verge |
18 October 2026 |
23 October 2026 |
BT |
|
|
Eastbridge Road |
SZC0711 - LEISTON 1384532, 1410701 - To build new FW / CW / Verge joint box and lay approx 50m of Duct 54/56 in FW / CW / Verge |
18 October 2026 |
23 October 2026 |
BT |
|
|
St James Street |
WESTLETON V28011 - Build 1 D144626 - Renew / Raise / Lower Frame and Cover on Verge in |
18 October 2026 |
21 October 2026 |
BT |
|
|
Blythburgh Road |
WESTLETON V28006 - Build 1 D143825 - INTERIM TO PERMANENT - in verge / footway / carriageway |
Traffic control (multi-way signals) |
20 October 2026 |
22 October 2026 |
BT |
|
Grove Road |
SAXMUNDHAM 1365648 - INTERIM TO PERMANENT - in Footway / Verge / Carriageway |
20 October 2026 |
23 October 2026 |
BT |
|
|
Westleton Road |
WESTLETON V9013 - Build 1 D144594 - Overlay – Lay approx 3m of Duct 54/56 in carriageway/verge to link existing BT Boxes to facilitate spine cabling works. |
20 October 2026 |
23 October 2026 |
BT |
|
|
Middleton Road |
Sizewell C- SZC0796
Vegetation management
2 way lights with a TMO
08:30 – 12:30 |
Traffic control (two-way signals) |
26 October 2026 |
26 October 2026 |
Sizewell C |
|
Heath View |
NEW TO EXISTING SERVICE TO FEED 164 Heath View, Leiston, IP16 4JL FROM THE MAIN IN FAR SIDE FOOTWAY |
18 October 2026 |
23 October 2026 |
Cadent |
|
|
Saxmundham Road |
REPLACE 1X POLE |
Traffic control (multi-way signals) |
26 October 2026 |
26 October 2026 |
BT |
|
Back Road |
RECOVER 4X OOU POLE |
18 October 2026 |
21 October 2026 |
BT |
|
|
Buckleswood Road |
Sizewell C - SZC0702
Series of short closures (5 minutes max) at the level crossing to allow SZC trains run in and out of the TCA. Up to 2no. freight train arrivals and 2no. Freight train departures per night (total 4 trains), between 12am and 5am.
Series of short closures (5 minutes max) at the level crossing to allow RRV & Rail Plant to pass into and out of the TCA. Up to 8no movements to cross from 0900 - 1900hrs |
8 September 2026 |
31 December 2026 |
Sizewell C |
|
|
Abbey Road |
Sizewell C - SZC0701
Series of short closures (5 minutes max) at the level crossing to allow SZC trains run in and out of the TCA. Up to 2no. freight train arrivals and 2no. Freight train departures per night (total 4 trains), between 12am and 5am.
Series of short closures (5 minutes max) at the level crossing to allow RRV & Rail Plant to pass into and out of the TCA. Up to 8no movements to cross from 0900 - 1900hrs |
8 September 2026 |
31 December 2026 |
Sizewell C |
|
|
Harling Way |
Excavate on service to install new boundary box |
20 October 2026 |
23 October 2026 |
Essex And Suffolk Water |
|
|
Neale Close |
Excavate on service to install new meter and chamber. |
20 October 2026 |
23 October 2026 |
Essex And Suffolk Water |
|
|
Middleton Moor |
Sizewell C – B1122 Early Years
Road improvements including vegetation clearance, new footpath construction, carriageway resurfacing and signage installation.
Works undertaken with nighttime closures of the B1122 and diversions along the B1122, B1069, A1094 and A12 (and vice versa).
The road closure will be progressed under an Article 19 application.
Mon-Thursday nights 20:00 to 05:00 |
31 August 2026 |
23 October 2026 |
Sizewell C |
|
|
Yoxford Road |
Sizewell C – B1122 Early Years
Road improvements including vegetation clearance, new footpath construction, carriageway resurfacing and signage installation.
Works undertaken with nighttime closures of the B1122 and diversions along the B1122, B1069, A1094 and A12 (and vice versa).
The road closure will be progressed under an Article 19 application.
Mon-Thursday nights 20:00 to 05:00 |
31 August 2026 |
23 October 2026 |
Sizewell C |
|
|
Leiston Road |
Lay new 125mm PE main, approx. 120 meters to be laid through the carriageway in the B1122.
Nightly full-width closures x4 nights per week (Monday night to Friday morning). Sizewell C project Article 19, SCZ0682 |
4 October 2026 |
6 November 2026 |
Essex And Suffolk Water |
|
|
Snape Road |
1. A two stage junction ensuring that Snape Road traffic streams can run simultaneously.
2. Vehicle Actuation introduced at side roads to ensure consistent application of max green times.
3. Max green for side roads to be to be peak hour specific adjusted to 10 seconds AM and 10
seconds PM.
4. Maximum permitted max green times for Snape Road of 60 seconds.
30MPH speed restriction |
Traffic control (two-way signals) |
27 July 2026 |
17 December 2027 |
Suffolk County Council |
|
Grove Road |
A three-stage junction ensuring that Grove Road traffic streams can run simultaneously, Access 11&12 can run simultaneously. (Previously Access 11&12 had run independently due to width constraints when constructing the haul road.)
An ‘all red’ period to permit pedestrians to cross Access 12. This is a safety measure to mitigate the event of vehicles turning into Access 12 in error. Max green for side roads to be to be peak hour specific adjusted to 20 seconds AM & 20
second 30MPH speed restri |
Traffic control (two-way signals) |
27 July 2026 |
17 December 2027 |
Suffolk County Council |
|
Victoria Road |
ABANDON 332M X 200MM DI GAS MAIN AND LAY 332M 180MM PE GAS MAIN ASSOCIATED CONNECTIONS AND APPROX 31 SERVICES |
Traffic control (multi-way signals) |
14 September 2026 |
23 October 2026 |
Cadent |
|
Grove Road |
A three-stage junction ensuring that Grove Road traffic streams can run simultaneously, Access 11&12 can run simultaneously. (Previously Access 11&12 had run independently due to width constraints when constructing the haul road.)
An ‘all red’ period to permit pedestrians to cross Access 12. This is a safety measure to mitigate the event of vehicles turning into Access 12 in error. Max green for side roads to be to be peak hour specific adjusted to 20 seconds AM & 20
second 30MPH speed restri |
Traffic control (two-way signals) |
21 June 2026 |
17 December 2027 |
Suffolk County Council |
|
Snape Road |
1. A two stage junction ensuring that Snape Road traffic streams can run simultaneously.
2. Vehicle Actuation introduced at side roads to ensure consistent application of max green times.
3. Max green for side roads to be to be peak hour specific adjusted to 10 seconds AM and 10
seconds PM.
4. Maximum permitted max green times for Snape Road of 60 seconds.
30MPH speed restriction |
Traffic control (two-way signals) |
21 June 2026 |
17 December 2027 |
Suffolk County Council |
|
Annesons Corner |
Sizewell C – SZC0669
(SLR-TM-011)
Annesons Corner/Hawthorn Road - Full Road Closure required for construction of
Sizewell Link Road - stopped up.
24hr closure.
Progressed under Article 19. |
10 August 2026 |
27 April 2027 |
Sizewell C |
|
|
Thorpe Road |
Installation of 30mph speed restriction for site access / Egress safety. |
25 May 2026 |
1 September 2027 |
Suffolk County Council |
|
|
White House Road |
Sizewell C – SZC
West House Site Operations
- Temporary road obstruction required for the upgrade of West House LX which is in relation to the Sizewell C AD4 Rail Scheme.
- Delivery of the Materials and Equipment
- Movement of service vehicles and effluent collections
TO15 required to complete all the essential activities in a safe manner. All site operations are in relation to the Sizewell C AD4 Rail Scheme.
Access will be maintained for local properties and the emergency services. |
16 April 2026 |
31 December 2026 |
Sizewell C |
|
|
The Green |
Sizewell C – SZC0496
Knodishall Compound 05/12/2025 - 05/05/2026
Requirement - TO15 for duration of MWL for delivery of welfare facilities.
Deliveries will be carried out on a 2 weekly basis
TO15 won't be used at the same time of the UKPN closure that's in place
overnight on 15th December.
Traffic Management Plan for movements taking place next week on 24th/25th June (updated to cover welfare & material deliveries) for a one-off delivery for that week. |
15 December 2025 |
31 December 2026 |
Suffolk County Council |
|
|
Westward Ho |
Sizewell C – (SZC0206)
Article 24 Speed Limit Buckleswood Road
Temporary 30mph speed limit Related to LA 928577 |
21 April 2025 |
31 December 2026 |
Suffolk County Council |
|
|
Road From A12 Yoxford To A1094 Aldeburgh |
Sizewell C – SZC0142 Temporary closure of layby west side of B1122 Abbey Road opposite Eastbridge Road junction to facilitate new roundabout construction and access into adjacent field for drainage, ducting & new bridleway construction. Cones & Signing only |
17 March 2025 |
31 December 2026 |
Suffolk County Council |
|
|
Road From A12 Yoxford To A1094 Aldeburgh |
Sizewell C – SZC0139 - Construction of new roundabout on B1122 Abbey Road / Eastbridge Road for primary access to the Main development site. Temporary traffic signals required at various stages throughout the duration of the works which will be manually controlled during peak periods. Works include drainage, ducting, earthworks, kerbing, road construction, street lighting, Pegasus crossing, surfacing, signs & road markings to facilitate new roundabout construction. |
Traffic control (multi-way signals) |
16 June 2025 |
31 December 2026 |
Suffolk County Council |
|
Abbey Road |
Sizewell C – SZC0140 - Carriageway construction & realignment works for SZC main development site roads. Combination of signing only & temporary traffic signals required at various stages throughout the duration of the works. Traffic signals will be manually controlled during peak periods. Works include drainage, ducting, earthworks, kerbing, road construction, street lighting, Pegasus crossing, surfacing, signs & road markings to facilitate road alignment. |
Traffic control (multi-way signals) |
16 June 2025 |
31 December 2026 |
Suffolk County Council |
|
Lovers Lane |
Sizewell C – SZC0141
Carriageway construction & realignment works on Lover’s Lane which includes Combination of signing only & temporary traffic signals required at various stages throughout the duration of the works. Traffic signals will be manually operated during peak periods.Works include drainage, ducting, earthworks, kerbing, road construction, street lighting, Pegasus crossing, surfacing, signs & road markings to road realignment |
Traffic control (multi-way signals) |
16 June 2025 |
31 December 2026 |
Suffolk County Council |
|
King Georges Avenue |
Sizewell C – (SZC0165) Article 24 Speed Limit King George’s Avenue, Leiston |
10 March 2025 |
31 March 2028 |
Suffolk County Council |
|
|
Eastbridge Road |
Sizewell C - SZC0138 - Eastbridge Road Plant Crossing. Construction of plant crossing point across Eastbridge Road from main site compound for Bridleway 19 Section 8 construction access. Manually operated ‘STOP WORKS’ signs to be used to safely control vehicular traffic for short periods (max 2 minutes) to allow construction traffic to cross the carriageway as and when required. |
10 February 2025 |
31 December 2026 |
Suffolk County Council |