A27 Arundel bypass

One of a package of 4 schemes to reduce congestion on the A27.

Region:  South East
Start date:  By the end of March 2020
Cost:  £100 million to £250 million
Status:  PLANNED
Type:  Major Scheme
End date:  TBC
Programme:  A27 schemes

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A27 Arundel bypass

One of a package of 4 schemes to reduce congestion on the A27.

Progress report

We are currently conducting a range of surveys and assessment work to give us information about:
  • traffic volumes
  • local environment, including the scheduled monuments of Tortington Priory and Arundel Castle and the South Downs National Park
  • the impact of the growing local economy and further development along the West Sussex Coastal Plain on the A27 at Arundel
  • environmental issues such as air quality
  • ancient woodland areas and how different options might impact these
This information will help us explore different design options that would meet the aims we have for this scheme. We are beginning discussions with local authorities, technical stakeholders and organisations we are legally required to consult such as Natural England. This will allow us to take into account their views.

What next?

Once we’ve worked up viable options, we’ll tell you about them and ask for your opinion. We hope to do this in summer 2017. You can sign up for our email alerts to stay informed.


Date Event
2015 A27 Corridor Feasibility Study
March 2015 Roads Investment Strategy (RIS)
Summer 2017 Have your say

Why we need this scheme

The Arundel section of the A27 lacks road and junction capacity. As a result it suffers from congestion, particularly junctions at Crossbush, The Causeway and Ford Road. Planned growth along the wider A27 corridor is likely to worsen the problem and at present there’s no proposal for public transport provision that would have a positive impact on traffic levels. This scheme aims to reduce congestion through Arundel by means of a new dual carriageway bypass. The bypass would link together the two existing dual carriageway sections of the A27 either side of Arundel. We are also assessing alternative options including online junction improvements. These proposals are subject to consultation with the National Parks Authority, Local Government and the public.


The objectives for the scheme are to:
  • reduce travel time and improving journey time reliability in hotspot areas
  • reconnect communities currently separated by the A27
  • reduce pollution impacts
  • enable local planning authorities to manage the impact of planned growth and in doing so support the wider economy
  • provide safer roads which are resilient to delay and which are able to adequately cater for the impacts of adverse weather
  • minimise impacts on the natural environment and optimising environmental opportunities and mitigation
  • provide opportunities for improved accessibility for all users

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