Wiltshire Council has announced that it is hosting a market engagement event ahead of procuring a contract for the delivery of the M4 Junction 17 improvement works, with a view to awarding the contract in early spring 2026.
The proposed scheme includes:
• Installation of traffic signals on all roundabout approaches
• Carriageway widening throughout the junction
• Increasing the number of traffic lanes across the motorway bridges from two to three
• Widening of the circulatory carriageway
The successful contractor must be capable of working on the National Highways network and experienced in delivering complex highway infrastructure improvements.
The contract will be delivered in two phases with an estimated value of £24m:
• Phase 1 – Early Contractor Involvement (ECI): Spring 2026 – Autumn 2026
• Phase 2 – Construction: 2027 (subject to approval of the Full Business Case by the Department for Transport)
This online engagement session will provide an overview of the project, procurement route, and key requirements for interested contractors, according to Pro Contract.
• Date: Tuesday 12 August 2025
• Time: 11:00am – 12:00pm
• Location: Microsoft Teams (link provided upon registration)
To register your interest and receive the joining link, please contact: [email protected]
(Wiltshire County Council logo courtesy of Wiltshire County Council)
















