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We want to build a bypass around the northern side of Llanddewi Velfrey.

First published:
25 August 2006
Last updated:

Information about disruptions on our network are on Traffic Wales


Project status: plannedEU funds in Wales
Region/county: Pembrokeshire, south west Wales
Start date: spring 2021
End date: Spring 2023
Cost: £40m. We have secured £23m EU funding for the project
Designers: Arup with environmental design provided by RML

Why we are doing it

The A40 between St Clears and Haverfordwest is mainly a single carriageway.

Current issues are:

  • few places for overtaking slower vehicles
  • poor visibility
  • many accesses opening on to the road
  • summer traffic can increase by over 30%
  • the road splits the community
  • the A40 runs through Llanddewi Velfrey where there is a 40mph speed limit

This means that journey times are poor. The road is dangerous for drivers as they may take bigger risks when passing slower vehicles.

We identified in the A40 West of St Clears study that there was a need for this scheme. We revisited and updated the study in 2015 to confirm that we should go ahead with this project.

The scheme

The scheme consists of:

  • a 2.5km bypass from Bethel Chapel to Ffynnon Wood
  • 2.5km improvements west of Ffynnon Wood
  • 1.4km extra overtaking eastbound
  • 1km extra overtaking westbound
  • The bypass will rejoin the existing road at Penblewin roundabout.

The objectives are:

  • to enhance network resilience and improve accessibility along the east-west transport corridor to key employment, community and tourism destinations
  • to improve prosperity and provide better access to the county town of Haverfordwest, the Haven Enterprise Zone and the West Wales ports at Fishguard, Milford Haven and Pembroke Dock
  • to reduce community severance and provide health and amenity benefits
  • to reduce the number and severity of collisions
  • to promote active travel by cycling, horse riding and walking to provide opportunities for healthy lifestyles
  • to deliver a scheme that promotes social inclusion and integrates with the local transport network to better connect local communities to key transport hubs
  • deliver a project that is sustainable in a globally responsible Wales, taking steps to reduce or offset waste and carbon
  • give due consideration to the impact of transport on the environment and provide enhancement when practicable

Current progress

Following a Public Local Inquiry held in March 2020, we received the Inspector’s Report us in May 2020.

Evidence presented to the Public Local Inquiry together with the recommendations made within the Inspector’s Report has been considered and the draft Orders have been published. There are some modifications to the original Orders.


Publish preferred route: spring 2010
Publication of draft orders: summer 2019
Statutory process: summer 2019 to early 2021
Public local Inquiry: March 2020
Procurement of contractor: autumn 2020 to summer 2021
Construction starts: summer 2021
Construction ends: spring 2023

How we are consulting

We undertook a public consultation in 2006 as part of the process to develop the preferred route. We engaged with Pembrokeshire businesses during the 2015 study.

We held two public exhibitions in April and October 2017. 

Following the publication of draft Orders in July 2019, we took a decision to hold a Public Local Inquiry, due to objections received to the draft Orders. A pre-inquiry meeting took place in January 2020. 

The Public Local Inquiry was held in March 2020. Details can be found on the public local inquiry website.

Next steps

The procurement of a contractor means the work could start in summer.

We hope work will complete by spring 2023.

Find out more

If you have any concerns or queries you can contact Martin Gallimore, Arup’s Public Liaison Officer, directly on 07923 887119 or alternatively email: