A27 Arundel bypass

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

Region:  South East
Start date:  2019/20
Cost:  £100 million to £250 million
Status:  PLANNED
Type:  Major Scheme
End date:  TBC
Programme:  A27 schemes

Progress report

We consulted on proposals to improve the A27 at Arundel between August and October 2017. Since then we have been carefully considering all the feedback we received. The process has been detailed and time-consuming, but it has been necessary to ensure we made the correct decision.

We can now confirm that a modified version of Option 5A has been chosen as our preferred route for this scheme. You can view the Preferred Route Announcement brochure, along with the Report on Public Consultation and our Scheme Assessment Report, on our consultation page.

What's next?

We will be continuing with our environmental survey works, and other investigations to help us design the scheme in greater detail.

There will then be a further period of statutory public consultation next year, when we ask you for your views on this more detailed design before we seek planning approval through the submission of an application for a Development Consent Order under the Planning Act 2008.

We will work with the local authorities to shape this consultation, to ensure that everyone has the opportunity to have their say.


Date Event
2015 A27 Corridor Feasibility Study
July – October 2017 Options consultation: Have your say
May 2018 Preferred route announcement
2019 Statutory public consultation
2019 Submit application for a Development Consent Order under the Planning Act 2008
2020 Start construction

Why we need this scheme

As the only east-west trunk road south of the M25, the A27 serves a population of more than 750,000 people, and connects a number of coastal communities between Portsmouth and Pevensey, near Eastbourne. On average, West Sussex also attracts 17 million visitor days per year, which, according to VisitBritain, is worth around £508 million to the local economy.

The A27 is currently a dual carriageway on either side of Arundel, but the single carriageway section and junctions through the town cannot cope with today’s traffic volumes. Long queues approaching Arundel are commonplace and, with the population predicted to rise across the region in future, congestion and delays will only increase if nothing is done to improve the road. Road safety is also a concern with an above average number of accidents on this section of the A27, while congestion around Arundel results in some drivers seeking alternative routes which are less suited to accommodating higher traffic flows. These alternatives include the B2139 through the South Downs National Park, disrupting the otherwise tranquil nature of the Park. Residents in local towns and villages are also affected by increases in through traffic.


The objectives for the scheme are to:
  • improve capacity of the A27 whilst supporting local planning authorities to manage the impact of planned growth
  • reduce congestion, reduce travel time and improve journey time reliability along the A27
  • improve the safety of travellers along the A27 and consequently the wider local road network
  • improve accessibility for all users to local services and facilities
  • deliver a scheme that minimises environmental impact and seeks to protect and enhance the quality of the surrounding environment through its high quality design
  • respect the South Downs National Park and its special qualities in our decision-making

Project media files and documents

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Project timeline

Planned roadworks

Roadworks and Events for England

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

Location : The A27 westbound between the junctions with the A284 Arundel West and the A29 North. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 20:00 and 06:00 from 25 September 2018 to 28 September 2018. Lanes Closed : All lanes will be closed.
Posted: September 26, 2018, 4:12 am
Location : The A27 westbound between the junctions with the A259 Chichester East and the A286 . Lane Closures : Lane one is closed. Reason : Roadworks. Status : Currently Active. Period : expect disruption until 20:00 on 28 September 2018. Lanes Closed : There is one of two lanes closed.
Posted: September 25, 2018, 3:18 pm
Location : The A27 westbound between the junctions with the A29 North and the A29 South. Lane Closures : Lane one will be closed. Reason : Emergency roadworks are planned. Status : Pending. Schedule : From 20:00 on 26 September 2018 to 06:00 on 27 September 2018. Lanes Closed : There will be one of two lanes closed.
Posted: September 22, 2018, 12:15 pm


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