A significant programme of improvements to the Longfield Gyratory in Trowbridge is set to begin on Monday, 28 July, as part of a phased initiative to ease congestion, improve safety and support the town's ongoing development.

Preliminary work is already underway, including traffic signal refurbishment at Tesco and structural strengthening of Cradle Bridge. From Monday, attention will shift to the main gyratory system, with construction delivered in five planned phases, starting in the County Way area and progressing clockwise around the gyratory.

Designed to improve vehicle capacity, journey times and pedestrian safety, the project also plays a key role in supporting the new Trowbridge leisure centre, currently under construction on the East Wing site near County Hall.

Cllr Ian Thorn, Leader of Wiltshire Council, said: "These essential upgrades will help to reduce journey times, increase vehicle capacity and make it safer for both pedestrians and cyclists to move across the gyratory.

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"We apologise for any inconvenience that may be caused by these works, but we have carefully planned the work in phases to minimise disruption as much as we can.

"The project will not only support the new leisure centre but also deliver long-term benefits for all road users in Trowbridge. The improvements have been modelled using projected traffic growth data for 2041, ensuring that the gyratory is future-proofed and capable of meeting the long-term needs of the community.

"We're committed to making our roads safer, more efficient, and more accessible for everyone, and these improvements will do just that."

One of the most significant upgrades will be a complete overhaul of the gyratory's traffic signal system. Outdated manually linked junctions and crossings will be replaced with two advanced signal controllers, designed to better coordinate traffic flow and improve pedestrian safety.

The project will also include:

• New signal-controlled junction at the East Wing development

• Shared-use paths for pedestrians and cyclists

• Widened carriageways to improve vehicle lane discipline and accommodate larger vehicles

Full Work Schedule:

• Phase 1 (28 July – 17 October): County Way and Brown Street

• Phase 2 (October – November): Castle Street

• Phase 3 (November – December): County Gate to the Lamb

• Phase 4 (January – February 2026): Mortimer Street, County Hall (south side of the leisure centre)

• Phase 5 (February – April 2026): East Wing opposite County Hall and north side of the leisure centre

While every effort will be made to limit disruption, Wiltshire Council is urging drivers and pedestrians to allow extra time for their journeys during the construction period.