A358 Taunton to Southfields

We’re proposing to upgrade the A358 to dual carriageway between Southfields Roundabout on the A303 and the M5 at Taunton. The delivery of this scheme is part of a long term aim to create a high-quality dual carriage way link between London and the South East and the South West.

Start date TBC

End date TBC

Cost £250 to £500 million

The A358 in Somerset connects the M5 at Taunton with Southfields roundabout on the A303

Congestion along the A358 in Somerset

The A358 in Somerset connects the M5 at Taunton with Southfields roundabout on the A303
Congestion along the A358 in Somerset
Congestion along the A358 in Somerset
Congestion along the A358 in Somerset

Visit our consultation

Latest updates

12 October 2021

Our consultation is now live

We're consulting on our proposals to upgrade the A358 Taunton to Southfields to dual carriageway. This will improve road safety, reduce traffic congestion and improve connectivity for road users and local communities, while unlocking economic growth in Somerset and the South west.

Now it’s your chance to have your say on our updated proposals.

The consultation runs from 12 October to 22 November 2021 - visit our consultation website to find out more about how you can get involved.

28 September 2021

Have your say: we're consulting 12 October - 22 November

We will be consulting on our proposals to upgrade the A358 between Taunton and Southfields roundabout from 12 October to 22 November 2021. The feedback from this consultation will help us develop our application for a Development Consent Order (planning consent) that we plan to submit next year.

You will be able to view our consultation plans on this webpage from 12 October 2021.

How to find out more

Online exhibition

From the 12 October, one of the best ways to find out about our proposals will be to visit our virtual exhibition room via this webpage. Here, you will be able to learn more about the project, study detailed plans and put your questions to our team. 

Members of our team will be available to answer your questions via a webchat function at the following times:

Date	Time
Tuesday 12 October	4pm – 7pm
Wednesday 13 October	11am – 2pm
Friday 15 October	8am – 11am
Friday 15 October	3pm – 6pm
Monday 18 October	12pm – 3pm
Wednesday 20 October	10am – 1pm
Wednesday 20 October	6pm – 9pm
Friday 22 October	9am – 12pm
Friday 22 October	3pm – 6pm
Thursday 18 November	3pm – 6pm
Friday 19 November	9am – 12pm

Outside of these times, you will be able to submit questions to our team who will get back to you via email.

Webinars

We’re hosting some themed webinars on Microsoft Teams with our project team, focusing on different topics and specialist areas. At these events, our team will give a short presentation and then take questions from attendees. You can submit your questions using the chat function, which can be used anonymously.

You can register for the below sessions by emailing: A358TauntontoSouthfields@highwaysengland.co.uk

Topic	Dates	Time
Consulting on the A358 Taunton to Southfields dualling scheme	Thursday 14 October	12pm
Section 1 – M5 junction 25 to Mattock’s Tree Green junction	Wednesday 20 October	5pm
Section 2 – Mattock’s Tree Green junction to Griffin Lane	Thursday 21 October	12pm
Section 3 – Griffin Lane to Ashill junction	Thursday 21 October	5pm
Section 4 – Ashill junction to Southfields roundabout	Friday 22 October	5pm
Walking, cycling and horse riding, including disabled users	Monday 1 November	3pm
The environment	Tuesday 2 November	3pm
Traffic modelling	Thursday 4 November	3pm
Consulting on the A358 Taunton to Southfields Dualling Scheme	Thursday 18 November	6pm

Public consultation events 

Visit one of our face-to-face events to find out more about the proposals and chat to our team.

Location	Date	Time
Taunton Racecourse, Orchard Portman, Taunton, TA3 7BL	Tuesday 19 October	2pm - 8pm
Monks Yard (Conference Room), Horton Cross Farm, Horton Cross, Ilminster, Somerset, TA19 9PT	Saturday 23 October	11am - 6pm
Holiday Inn Taunton, Deane Gate Avenue, Taunton, Somerset, TA1 2UA	Wednesday 3 November	11am - 6pm

Telephone surgery

You can book a call back from a member of the project team who will answer your questions on the proposed changes. Call backs will be made Monday to Friday, 12pm to 7pm, between 12 October and 22 November.

You can request a call back by emailing: A358TauntontoSouthfields@highwaysengland.co.uk or calling 0300 123 5000.

Home delivery

If you do not have access to the internet or experience problems downloading the consultation materials, we can send you free of charge one printed copy of the consultation booklet, feedback questionnaire and non-technical summary of the Preliminary Environmental Information Report.

You can request printed copies by emailing A358TauntontoSouthfields@highwaysengland.co.uk or calling 0300 123 5000.

Deposit points

You can also visit one of the information points below to pick up a paper copy of the consultation booklet, feedback questionnaire and non-technical summary of the Preliminary Environmental Information Report.

·Taunton Library, Paul Street, Taunton, TA1 3XZ

·South Petherton Library, 3 St James's Street, South Petherton, TA13 5BS

·Martock Library, North Street, Martock, TA12 6DL

·Priorswood Library, Hillside Children's Centre, Eastwick Rd, Taunton, TA2 7HD

· Ilminster Library, Ditton Street, Ilminster, TA19 0BW (hard copy of the Preliminary Environmental Information Report will also be available for inspection at this location)

·Chard Library, Holyrood Street, Chard, TA20 2YA

·Somerset County Council mobile library

·Ilminster Meeting House & Arts Centre, 35 East Street, Ilminster, TA19 0AN

·Henlade Post Office, Henlade, Taunton, TA3 5DH

·Blackbrook Leisure Centre & Spa, Blackbrook Way, Taunton, TA1 2RW

· Somerset West and Taunton Council, Deane House, Belvedere Road, Taunton, Somerset, TA1 1HE (hard copy of the Preliminary Environmental Information Report will also be available for inspection at this location)

How to have your say

From 12 October you can submit a response by using one of the methods below, which are all free to use. Please note, we cannot guarantee that responses sent by any other means will be considered.

Online response form

Fill in the online questionnaire.

Freepost

Post your response for or comments to:

FREEPOST A358 TAUNTON TO SOUTHFIELDS 

The Freepost address is the only text needed on the envelope, and no stamp is required.

Email

Email your comments to: A358TauntontoSouthfields@highwaysengland.co.uk

20 September 2021

Ground investigation surveys

As we develop our plans for the A358 upgrade scheme, some of our teams will be out and about around the route to complete essential surveys of the local area and environment. This includes ground investigation surveys which we use to show all sorts of information – such as buildings, roads, population numbers, height and flooding data. This information helps us to develop our plans for the scheme as carefully and accurately as possible.

Our teams will also be working on important archaeological surveys. These help to locate historical sites or materials and allow us to make informed decisions about our proposals and the areas where we will look to carry out works in the future.

You can read more about the different types of surveys we'll be doing in the 'Environmental' section further down this webpage.

Site compound

As we complete these surveys, some of our teams will be working from a small site in the area. This site compound will be located away from any residential areas and we will make sure that any disruption is kept to a minimum.

Road closures

To carry out the surveys safely there will be some temporary lane and local road closures. These closures will take place on weeknights only, between 8pm and 6am. We’ve provided a summary of the dates and closures below.

From Monday 9 – 16 August 2021 and from Monday 13 – 27 September 2021

We will be reducing traffic down to a single lane from Southfields roundabout heading towards Taunton. As this is a single lane closure, we will not be introducing a diversion route, we will use a a temporary traffic lights system. Emergency access will be maintained by our traffic management contractor Alliance Highway.

From Wednesday 29 September – 1 October 2021

We will need to close some local roads which connect to the A358. We will carry out these closures one at a time and put a diversion route in place. These closures will take place on weeknights only, between 9pm and 6am Emergency access will be maintained by our traffic management contractor Alliance Highway. To find more information visit www.streetworks.org.uk/live-traffic-works-map/ where you can see an interactive map of the locations and diversions.

If you have any questions or want to speak to a member of our team, please email us at A358TauntontoSouthfields@highwaysengland.co.uk or call us on 0300 123 5000.
20 May 2021
Surveys

We’ve now awarded a £328 million contract to Taylor Woodrow Plus to design and build the A358 Taunton to Southfields upgrade scheme. We can now update you with what this means for the scheme, what you might see happening along the route and how and when you can have your say on the plans.

Upcoming closures

To help us to design the route as best we can, we need to carry out surveys into the current state of the road.

To carry out these surveys safely we will be introducing a single lane of traffic between Southfields Roundabout and Hatch Green, and an additional one between Hatch Green and Ash Cross from Monday 7 June to Friday 2 July. These closures will take place on weeknights only, between 8pm and 6am. Because this is a single lane closure, we will not be introducing diversion lanes, only a temporary traffic lights system. Emergency access will also be maintained at all times.

Environmental surveys

The countryside along the route is home to some incredible plants and animals - many of which are protected by law - and we need to take steps to avoid them or reduce our impact. That’s why you may see our team out and about carrying out various surveys to look into things like:
- Air quality
- Cultural heritage
- Changes to how the local scenery will look
- Biodiversity
- Birds
- Reptiles
- Great crested newts
- Water quality sampling
With these surveys and design plans well underway, we are continuing to plan for our public consultation, which we expect to take place later this year. Before that, we will be meeting regularly with local community organisations and representatives.

This will allow us to give updates on the route and to also get important feedback which will help us to shape our final designs. We will be also be speaking to special interest groups, such as walkers, cyclists and horse riders, to make sure that our plans can cater for different road users as much as we can.
27 November 2020

Early works on the scheme’s preliminary design progressing

We are pleased to be able to confirm that the A358 scheme has now been allocated to Taylor Woodrow following a competitive tender process through the Regional Delivery Partnerships framework.

We are now in the process of finalising the scheme contract with Taylor Woodrow, which is scheduled to be awarded early next year. Taylor Woodrow are also progressing early works on the scheme’s preliminary design.

The scheme is classed as a Nationally Significant Infrastructure Project (NSIP) under the Planning Act 2008. This means we’ll need to make an application for a special type of planning permission called a Development Consent Order (DCO) to gain authorisation to acquire the land and construct the scheme.

Before we can submit our application for a DCO we will hold a statutory public consultation on the design where we invite comments on our proposals. We are still finalising the future programme for the scheme, but we anticipate holding this consultation in 2021.

You can find out more about NSIPs on the Planning Inspectorate's website. Alternatively you can watch our short animation which explains the process in simple terms.
24 October 2019
Preferred route announcement

Since we announced our preferred route in June, we’ve been carrying out surveys to help inform the scheme design ahead of consultation. In September we held our second Community Liaison Forum and asked the members of the forum to give feedback on the route to help us develop the scheme design. We’ve grouped the feedback given under four headings:
- local links and community severance
- process, timeline and scope of works
- rationale and impact of the route regarding housing development and economic growth with a focus on job creation
- focus on the location and performance of proposed and existing junctions and access points
You can see more detail about the feedback in the meeting note in the 'Consultations' folder under the project information section.

We’ve also been busy creating an animation to explain the process we go through when designing a road scheme such as the A358. We hope this will help you understand the level of detail you can expect to see at each stage.

See more updates

Project information

The A303/A358 corridor is a vital connection between the South West and London and the South East. While much of the corridor 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, and they add to an increased risk of accidents.

Currently most of the A358 is a single lane and has many local roads and private accesses joining directly with it. It’s often congested and is a source of frustration for local people, and those using the road to travel longer distances.

Many road users try to avoid the traffic congestion by diverting onto smaller local roads, which then increases the level of traffic in surrounding villages.

To address this, we’re proposing to upgrade an 8.5 mile section of the A358 between Southfields Roundabout on the A303 and the M5 at Taunton, to a high quality dual carriageway.

In 2019 we made our preferred route announcement for the improvement scheme, confirming that we’ll be taking a modified version of the pink option forward. You can find out more about the options consultations and the chosen route.

In delivering the scheme, we’re aiming to:

improve the capacity of the road to reduce delays and queues that occur during peak hours and at key times of the year i.e. the height of summer.
support economic growth, facilitating growth in jobs and housing by providing a free-flowing and reliable connection between the South East and the South West
make the road safer, by providing additional capacity and reducing driver stress. We’ll also improve routes for pedestrians, cyclists, horse riders in the area.
protect the environment and look for opportunities to improve it, minimising any unnecessary impact of the scheme on the surrounding natural and historic environment and landscape
work with local communities to reduce the impact of the road in terms of community severance, and look for ways to improve local peoples’ quality of life
make journey times more reliable and resilient; by providing more capacity it will become easier to manage traffic when incidents occur