Bidding opens for £22m M4 Junction 17 upgrade

£22m M4 Junction 17 Upgrade

Bidding has opened for the £22m M4 Junction 17 upgrade project, led by Wiltshire Council.

The project, set to start construction in 2027, aims to fully signalise, widen, and upgrade the junction to handle future traffic growth.

Funding is secured through the Government's Major Road Network programme, with the scheme identified as a regional priority.

Works will "maximise and optimise capacity of the junction within the bounds of the existing highway" and avoid piecemeal upgrades.

Author's summary: Bidding opens for £22m M4 upgrade project.

The project is subject to Department for Transport approval of the full business case.

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Construction Enquirer Construction Enquirer — 2025-10-13

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