£63m A12 upgrade plans unveiled to improve travel in Suffolk

Major transport improvements include safety upgrades, a new 'mobility hub', and dual carriageway

Author: Isabella HudsonPublished 4th Nov 2025

Suffolk County Council has announced a £63 million package of improvements along the A12, aimed at boosting safety, accessibility, and transport connectivity.

The proposals focus on a 6.8 mile (11km) stretch between the A12/A14 Seven Hills Junction and Woods Lane junction, north of Woodbridge.

The planned works include significant changes to road junctions, new pathways for pedestrians and cyclists, and a dual carriageway upgrade. A mobility hub is also set to be constructed at Adastral Park to support sustainable travel options.

Key elements of the plan

The council has revealed the main features of the scheme, which include:

Safety and traffic flow improvements through upgrades to seven road junctions

A new shared use footway and cycleway, along with crossing facilities at key junctions

A mobility hub at Adastral Park to improve public transport integration

A new signalised bus link connecting the A12 and Main Road via Portal Avenue

Replacement of the Martlesham footbridge with an accessible bridge for non-motorised users

Dual carriageway upgrade along the A12 between Ipswich Road and Grundisburgh Road, plus new laybys and agricultural accessways

Additional highway features such as pedestrian crossings, maintenance bays, signs, and upgraded signals

Community engagement and consultation

This project follows two public consultations since the scheme was initially outlined in 2020.

The council plans to submit a formal planning application to its planning directorate on 14th November and is inviting feedback from residents and stakeholders.

Councillor Chris Chambers, Cabinet Member for Transport Strategy, said: “This council is committed to enhancing local infrastructure, aiding sustainable economic recovery and developing growth.

“These proposals are a transformative infrastructure investment which reflect the council’s dedication to improving regional mobility, reducing congestion, and promoting sustainable transport.”

Public comments are welcome and can be sent to Suffolk County Council by post or email.

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