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An upgrade of the corporate finance system is taking place from 21 to 23 May 2018. Customers experiencing problems paying for goods/ services over this period should contact the relevant service team.

M4 Junction 16 improvement works

Latest news and updates on the project

As you may have seen with the recent press coverage, Junction 16 is now fully operational. All of the traffic management has been removed and the right hand turn towards Wroughton is now open. There are a few things to finish off including the landscaping, demobilisation of the compound, and the traffic light testing period, but these are not on the road network. The traffic lights are now running off the intelligent MOVA loop system which can react to the traffic. Please be aware that there may be some instances over the next few weeks of lanes being coned off for a short period to resolve any problems that may occur.

As part of a separate scheme, Highways England will be working on the eastbound entry slip at Junction 16, from Monday, 21 May until early July. This is a completely separate scheme that is not related to SBC’s Junction 16 scheme. Highways England will carry out the works overnight between 8.00pm and 6.00am, during this time they expect to have 3 full closures of the eastbound entry slip, but traffic management will be on the roundabout throughout the works during 8.00pm and 6.00am. For more information on this please see the Highways England website

Junction 16 improvement works plans

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)

For archived information and our latest blogs concerning Junction 16, use the links below:

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: 22 May 2018. Was this information helpful?

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