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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: end 2022
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

We announced our preferred route in March 2010.

In the 2015 update of the study, we considered options for improvements along the A40. This included the feasibility of dualling the road.

We appointed Arcadis as an employer's agent in October 2015. They will support us to deliver the scheme.

We carried out initial ground investigation in spring 2016. We completed ecological surveys in summer 2016.

We appointed Carillion PLC, supported by Arup and RML, as design and build contractor in January 2017 and held public exhibitions in April and October 2017.

Following Carillion PLC’s liquidation we appointed Arup, supported by RML. They will complete the preliminary design and take the scheme through the statutory process. 

Arup have completed the outline design and detailed environmental impact assessment. This has identified the land necessary to build the scheme. We published draft Orders in July 2019.

A further procurement exercise will take place to appoint a new contractor to build the road.


Publication of draft orders: summer 2019
Statutory process: summer 2019
Public local inquiry: spring 2020
Procurement of contractor: summer 2020 to autumn 2021
Construction starts: spring 2021
Construction ends: end 2022

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.

Due to objections received to the draft Orders, we took a decision to hold a public local inquiry. 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.

We held two public exhibitions in April and October 2017. We met with local councils, landowners and businesses and will continue to meet. 

Next steps

The published draft orders include details on the area of land required.

The Inspector will produce a report on their recommendations. We will consider the findings of this report before deciding whether to make the Orders.

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: