09-08-2025
Drivers warned of 62-mile diversion while A12 closed
Sizewell C has announced overnight closures on the A12 which is set to include a 62-mile diversion.
In a letter sent to residents, the power plant announced the works would take place overnight on the major road as well as the A1094 and Kettles Lane in Friday Street.
During the temporary closure work will take place as part of the creation of the Friday Street roundabout and involve the installation of a lane guard and drainage crossings on the carriageway.
The diversion for the A12 is 62 miles long. (Image: The works are split into three phases with the A12, A1094 and Kettles Lane shutting from August 31 to September 3, between 8pm and 5am.
In the second phase, the A1094 and Kettles Lane will shut between September 4 and 7 from 8pm to 5am.
Then, for the final phase, Kettles Lane will shut from September to the second quarter of 2026.
While the A12 is shut, there will be a 62-mile diversion, which will follow the A1145, A146, A143, A140, A14 and vice versa.
The southbound diversion for the A1094 will use the A1152, B1069 and vice versa.
The northbound diversion for the A1094 will use the B1069, B1122 and vice versa.
Sizewell C has also announced that they will be implementing traffic management at Friday Street to prevent traffic from using Kettles Lane.
