M4 Junction 16 improvement works

Latest news and updates on the project

Works at Junction 16 continue to make steady progress. The no right turn restriction at Lydiard Fields will be lifted by the end of today as the majority of the works at Lydiard is complete.
Elsewhere, street lighting columns continue to be put up around the junction, along with drainage, ducting and kerb works on the southern side of the roundabout.  Surfacing has been taking place at the entrance to Upper Studley Farm and the Westbound off slip while works on Hay Lane include the final trim of the topsoil. Drainage works continue on the westbound entry slip road.

Although the slip road closure is not expected to cause significant disruption, we would still encourage drivers to check before they travel and allow extra time for their journeys.

For archived information and our latest blogs concerning Junction 16, please see details below:

Junction 16 improvement works

Swindon Borough Council is undertaking major works to remodel Junction 16 of the M4. This scheme is part of our plan to improve roads across the network and further enhance the growth and economy of Swindon and Wiltshire.

The scheme will be funded by the Swindon and Wiltshire Local Enterprise Partnership (LEP) and the Wichelstowe Joint Venture. It is being delivered by Swindon Borough Council in partnership with Highways England and Wiltshire Council.

Works are now underway and will ensure the major highway interchange can cope with forecast future traffic levels and cater for future development in the surrounding areas.

Hochtief (UK) Construction Ltd is carrying out the work, which is expected to be complete by Spring 2018.

The junction will be open to traffic at all times, with the exception of the occasional overnight closure, but there is likely to be some disruption to motorists.


Aerial photograph of M4 Junction 16
Overview of redesigned junction
Dedicated right turn from Swindon Road to Hay Lane
A3102 Great Western Way
A3102 Swindon Road
Dedicated right turn from Swindon Road to Hay Lane
B4005 Hay Lane
Proposed carriageway
Proposed footpath
Proposed traffic island


A detailed plan of the new scheme is available to download (PDF) as well as some Frequently Asked Questions (PDF)

Further information

If you have questions or comments about the work at Junction 16, please get in touch with us.

Telephone: 01793 445500
Email: junction16@swindon.gov.uk

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Anyone who would like to receive the latest news relating to the Junction 16 upgrade can subscribe to the Council’s Highways News newsletter

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Last updated: 08 December 2017. Was this information helpful?

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