A12 junctions 29 to 33 maintenance
We're doing maintenance work on the A12 between junctions 29 (Colchester, Crown Interchange) and 33 (Ipswich, Copdock Interchange). The work will include resurfacing, refreshing road markings, and replacing worn-out road studs (cat’s eyes).
Latest updates
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08 September 2025
Work starts
We're maintaining the A12 between junctions 29 (Colchester, Crown Interchange) and 33 (Ipswich, Copdock Interchange).
Work includes resurfacing, refreshing road markings, and replacing road studs (cat’s eyes).
We'll work over six nights from Monday 8 September 2025 between 9pm and 5am, weather permitting.
Closures and diversions
To work safely, we’ll need the following road closures:
Monday 8 September and Saturday 13 September (9pm to 5am)
- A12 junction 32 southbound entry slip road closure
Diversion
You will need to:
- head northbound to junction 33 (A14 junction 55)
- use the junction to rejoin the A12 heading southbound, and continue your journey
A12 junction 32 southbound entry slip road closure map
Tuesday 9 September to Friday 12 September (9pm to 5am)
- A12 junctions 32b to 32a southbound closure
Diversion
You will need to:
- head southbound on the A12 and need to travel through junctions 32b and 32a
- leave the A12 at junction 32b using the exit slip road onto Ipswich Road
- from there, rejoin the A12 at junction 32a to continue your journey
A12 junctions 32b to 32a southbound closure map
Please remember that closures can change at short notice. You can check the latest information on our daily closures page or find live travel information on our Traffic England. Our travel alerts give details of live incidents on our network.
We'll update this page with details of further works when we've confirmed dates.
Project information
Documents
Traffic information
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