A358 Taunton to SouthfieldsRecently updated

A dual carriageway link between the M5 at Taunton and the A303, part of a programme of improvements to the A303/A30/A358.

Region:  South West
Start date:  TBC
Cost:  £250 to £500 million
Status:  PLANNED
Type:  Major Scheme
End date:  TBC

Progress report

We are currently consulting on our proposal to upgrade the A358 between the M5 at Taunton and the A303. The consultation – which was paused briefly during the general election - will now run until 23.59 on 16 July 2017.

There will be a final public exhibition event on Friday 30 June between 10am and 7pm at the Holiday Inn in Taunton (Blackdown Suite, Holiday Inn, Deane Gate Avenue, Taunton, TA1 2UA). This event replaces the one that was due to take place on 8 May 2017.

Information about the proposed scheme remains available at local venues and on our consultation webpage. We continue to welcome all feedback and views on the scheme.

Have your say on our consultation page

Visit our consultation website to find documents which will guide you through the consultation process and help you locate the information you want to read. When you are ready to have your say you can use the online feedback form to tell us what you think.

What next?

After the consultation we‘ll combine your feedback with further technical analysis and use this to finalise our preferred route: the route we will take forward for more detailed design. We hope to be able to announce the preferred route in winter 2017.

If all goes to plan we would like to start on site in 2020.


Date Event
December 2014 Scheme announced
February 2016 Public information events
28 March to 16 July 2017 Have your say

Why we need this scheme

The A303/A358 corridor is a vital connection between the south west, London and the south east. While much of the route is a dual carriageway, there are still over 35 miles of single carriageway. These sections act as congestion bottlenecks, particularly in the summer months and at weekends, causing delays to road users travelling between the M3 motorway and the south west and an increased risk of accidents.

The A358 itself comprises a mix of dual and single lane carriageway, This section also has poor junction alignment and visibility and changes in road type when compared against a high quality dual carriageway and expected of a key strategic route.

Ensuring that improvements are made to the A358 between Taunton and Southfields, to help traffic to flow more freely to and from the South West, is a priority. Without improvements that reduce congestion and journey times it will be difficult for the south west’s regional economy to expand and its communities to prosper.


The scheme will:
  • reduce congestion, improve journey times and make our network safer for our customers
  • support jobs and economic growth at a local and national level
  • minimise adverse impacts on the surrounding natural environment and landscape

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Project timeline

Planned roadworks

Roadworks and Events for England

The latest incident information for England's motorway and trunk routes provided by Highways England

Location : The M5 southbound between junctions J24 and J25 . Lane Closures : The hard shoulder is closed. Reason : Road repairs. Status : Currently Active. Period : expect disruption until 12:30 on 18 December 2017.
Posted: July 21, 2017, 4:05 am


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