SZC related Traffic Management & Road Closure

Please see below the current traffic management and road closures currently in place.

Road Closures

Willow Marsh Lane, Darsham is closed until June 2026 to enable the construction of the Northern Park & Ride roundabout and site. Diversion in place via Walpole Road, A144, A12.

Abbey Lane, Leiston is closed until January 2027 to enable the construction of the new railway line. Diversions in place via Harrow Lane, Hawthorn Road and Pretty Road.

Night-time closure of Abbey Road B1122 from 22 September till 31 October 20:00 – 05:00. This closure is to enable several utility diversionary works to take place, as well as other tie in works. Diversions in place for Abbey Road diversion via B1122, A12, A1094 and B1069, and via King George’s Avenue and B1122 for Lover’s Lane. Further closures of both roads are required.

Full weekend closure of Abbey Road B1122 and Lovers Lane Junction from 3 October 20:00 -05:00 6 October. Diversions in place for Abbey Road diversion via B1122, A12, A1094 and B1069. These works are to tie in the realignment of Lovers Lane.

Day time closure of the Southern end of the B1122 Leiston Road from 6 – 10 October between 09:00 – 16:00. Diversions in place B1125, B1387, A12 and B1122.

Moat Road, Therberton closed from 22 September till 17 October, to enable BT Openreach to ground overhead cables diversion via Hawthorn Road and Pretty Road.

B1125 Reckford Road, Westleton will be closed for UK Power Network to carry our power connections between 22 to 30 September. Diversion via B1387, A12 and B1122. The southern end of the B1125 will be closed between the hours of 09:00 - 16:00 from 6 to 10 October for vegetation clearance and tree felling. Diversion via B1387, A12 and B1122.

Church Road, Theberton will be closed between 6 and 24 October by Scottish Power to carry out Sizewell C and Scottish Power combined mitigation scheme at Theberton.

Kettles Lane, Benhall is closed until June 2026 for the construction of the Friday Street roundabout.

B1069 Snape Road is closed on 2 further weekends (27 to 29 September and 10 to 12 October) by Scottish Power to carry out works to deliver their access.

Traffic Management

A12 single lane closure northbound along the dual carriage way from Ufford Road to the Wickham Market Slip Road. Expected to be in place till 20 December 2025.

A12 Marlesford in the vicinity of the Farm Café, varying traffic management, including traffic signals, in place to enable UK Power Network power connection works. Expected to be in place until November 2025.

A12, Friday Street varying traffic management in place, including lane closures and traffic signals until June 2026 as part of construction of the new roundabout.

B1122 off peak traffic signals implemented by Scottish Power at Theberton to deliver improved pedestrian footway 22 September to 24 October.

Sizewell C is also currently implementing short term night-time traffic management associated with the delivery of the Sizewell C countywide highway signs throughout the month.

Two-way traffic light during off peak hours 09:30 – 15:30 Monday to Friday on the A12 north of Town Farm Lane. This will be in place from 29 September – 10 October 2025.

Speed restrictions

A12 between Glemham and Benhall, 30 mph speed limit in place whilst works are carried out to construct the new by-pass.

A12 Friday Street 30 mph speed limit in place whilst works are carried out to construct the new roundabout.

A12 between Kelsale and Yoxford, 30 mph speed limit in place whilst works are carried out to construct the Sizewell Link Road and roundabout.

A12 Darsham, 30 mph speed limit in place whilst works are carried out to construct the Northern Park & Ride roundabout.

B1122, Lover’s Lane and Sizewell Gap 30 mph speed limit in place.

B1125, 30mph and 50mph speed limits in place associated with speed cameras.

Buckleswood Road and Westward Ho 30 mph speed limit in place whilst works are carried out to construct the Green Rail Route.