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

Following the public consultation on our proposal held from 28 March to 16 July 2017, we have reviewed feedback, listened to comments made and have taken the decision to seek further public opinion for our proposal for the section of the A358 between the M5 at Taunton and West Hatch Lane.

We will hold a supplementary public consultation on our proposals this autumn, and dates for the public exhibition events will be announced shortly.

We are not proposing any further consultation on the section between West Hatch Lane and Southfields Roundabout at this stage because we have received clear feedback on our proposal from the completed consultation. We will look to make a preferred route announcement for this section of the route later this year subject to a detailed review of all responses.

What next?

After the supplementary consultation, we will review your feedback with further analysis of our proposal to finalise our preferred route: the route that we will take forward for more design refinement.

Subject to a satisfactory completion of the statutory process we are aiming to start works 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

Project media files and documents

There are no images for this project
There are no videos for this project

Project timeline

Planned roadworks

Roadworks and Events for England

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


Breaking News: Traffic Information

Breaking News

The latest current breaking news items for England's motorway network

The A3 northbound is closed between the A325 and A283 due to a collision.
Posted: January 1, 1970, 12:00 am

Regional Twitter feed

Keep up-to-date

Sign up for updates
Please leave feedback