Overview
- National Highways has begun a series of overnight southbound closures on the A12 between Marks Tey and Hatfield Peverel to carry out essential safety resurfacing and is routing traffic via the A120 and A131 diversion.
- A separate full weekend closure will shut the A12 between The Street in Darsham and Westleton Road to allow a utility crossing and a new pedestrian crossing, with the official diversion running along the A12, A14, A140, A143 and A146 and spanning nearly 100 miles.
- Authorities say diversion signs will be in place and access to nearby properties will be maintained during the works, and SZC has worked with Suffolk County Council to coordinate the weekend closure dates and apologise for disruption.
- National Highways emphasises emergency vehicles will still have access and warns motorists to expect delays and possible short‑notice changes to the closures.
- Because the A12 is a major trunk route, the combined overnight and weekend works are likely to cause widespread longer journey times and local logistical disruption, especially if weather or earlier emergency repairs force further plan changes.