Bidding opens for £22m M4 Junction 17 upgrade

The challenge, resulting from begin development in 2027, will see the junction totally signalised, widened, and upgraded to deal with future progress in visitors volumes alongside the A350 hall between Wiltshire and the South Coast.

Bidders will first participate in an Early Contractor Involvement section subsequent spring earlier than major works start, topic to Division for Transport approval of the total enterprise case.

The job will contain widening the motorway bridges from two to a few lanes, upgrading approaches, and eradicating a number of close by laybys.

Funding has been secured by the Authorities’s Main Highway Community programme, with the scheme recognized as a regional precedence by the Western Gateway sub-national Transport Physique.

Wiltshire Council stated the works will “maximise and optimise capability of the junction throughout the bounds of the prevailing freeway” and keep away from piecemeal upgrades over coming years.

Tender submissions shut on 19 December 2025, with award anticipated in March 2026.

Extra data on the contract and the way to apply might be discovered here.