Stephenson Street flood scheme

Closed 21 Apr 2021

Opened 22 Mar 2021


Construction work on the Stephenson Street Flood Risk Management scheme began in February 2023 and will reduce the flood risk to over 2000 properties in Newport.  

View this page in Welsh 

Overview of the scheme 

Homes and businesses in the Lliswerry area of Newport,  are vulnerable to flooding from the River Usk through some low spots in the existing flood defences during periods of heavy rainfall and high tides.

Leisure amenities and infrastructure such as the A48, Newport International Sports Village, Newport Stadium and Dragon Park are also at-risk flooding.

Our Flood Risk Management scheme will help reduce the risk of flooding to over 2000 properties and business in the area and has been constructed with future climate change projections in mind, accounting for sea level rise over the next 50 years.

The work involves bolstering parts of the existing 1350m flood embankment along the eastern riverbank and constructing new flood walls, raising a section of highway and the installation of a large flood gate.

The scheme consists of the work shown below:

  • Localised ground raising north of Stephenson Street as well as road raising and landscaping on Stephenson Street
  • Raising and improvements to an existing flood embankment along the western boundary of Coronation Park
  • Construction of a sheet pile flood wall and embankment
  • Construction of 0.7km of flood relief road connecting East Bank Road and Corporation Road, with associated drainage, access points and minor modifications to East Bank Road
  • Reinforced concrete flood walls and a short length of flood bund within the Felnex Industrial Estate
  • Reinforced concrete flood wall near Pye Corner
  • Reinforced concrete flood wall and access track at Nash
  • Flood gate to the Corporation Road railway overbridge
  • Non-return tidal flap valves and culvert enhancements to the Network Rail embankment
  • Enhancements to the Wales Coastal Path and landscaping to Coronation Park

In addition to reducing flood risk to the community, the scheme will also see improvements carried out to community green spaces and the nearby section of the iconic Wales Coast Path.

This includes a new footpath within Coronation Park linking up with the Wales Coast Path to create a circular walking route with new viewing platforms across the river Usk.

Three new ‘urban forests’ consisting of 1,600 new, young trees are also planned within Coronation Park to mitigate for approximately 650 trees and shrubs that will need to be removed as part of the construction.

The cost of the scheme is estimated at £21m and is funded by Welsh Government. NRW successfully appointed Alun Griffiths as the main contractor to carry out the work in December 2022.

The work is expected to continue through to the end of autumn 2024.

⚠️Corporation Road Closure Notice

As part of our work to deliver the  flood risk management scheme, we will need to close the road under the railway bridge at the end of Corporation Road from the 12 August.

We anticipate that the road will be closed for approximately 12 weeks to allow our contractors to be able to safely carry out the work.

An access only diversion will be in place via Stephenson Street, East Bank Road and the new relief road.

Affected areas will include the industrial area around  Liberty Steel, SIMEC and Marshalls.

Advanced warning signage will be installed in the area.

Please make sure you follow any new signs and diversions that may be in place.

We apologise for any disruption this may cause and will endeavour to reopen the road as quickly as possible in order to minimise disruption.

We will share updates as they are available via our social media channels and this project page.

If you have any queries, please contact us at :

Progress updates

February 2024 – one year on since construction work began

One year on since construction work began, we’re pleased to be able to say that the project is making good progress.

Here’s a quick look at what work has been completed so far:

  • Work to install 700 linear meters of sheet piles has been completed, helping to strengthen the embankment along the river Usk.
  • The majority of the reinforced concrete wall around the Felnex industrial estate has been completed which forms a further 35% of the overall flood protection.
  • Preparation work for the raised section of the highway off Eastbank Road has almost been completed, which will provide an alternative route for road users in the area.

Find out more information in our press release

This aerial drone footage show the progress that has been made on the new flood scheme so far:

The above picture shows the high tide along the River Usk at Newport on the 12 February,  next to the 700 linear meters of sheet piles that have recently been completed, helping to strengthen the embankment along the river Usk.

July 2023 – six months in : a look at progress to date

Over the last six months our contractor, Alun Griffiths, has been working hard on the construction of the flood scheme at Lliswerry. Here’s a summary of the work that has been completed so far:

Vegetation clearance

Vegetation clearance along the length of the flood scheme from the northern extent in Coronation Park to Liberty Steel in the south has now been completed. This clearance work has allowed our contractors to commence the sheet piling section of the flood defence.

Sheet piling work

Sheet piling work along the River Usk began in April and is scheduled to be finished by late August 2023.

Sheet piling is a type of deep foundation used in construction work. The sheet piles used are recycled and renewably produced steel sections that are driven to a set depth into the ground. They have interlocking edges and fit together to form a structurally sound wall or barrier. They do not result in damage to the surrounding ground, unlike bored or contiguous concrete piling.

The sheet piles have been inserted using a hydraulic Giken press which has helped to significantly reduce the vibrations and noise disruption to local wildlife and industry.

Creating a new route for local businesses around the Felnex Industrial Estate

Preparation work for the raised section of the highway off Eastbank Road is underway. The new highway is due to be completed in Summer 2024. This will provide an alternative route for road users in the area, should the floodgate on Corporation Road be operated for maintenance purposes or prior to anticipated peak tidal flows. 

Improvements to the Wales Coast Path

Work has begun on the Wales Coast Path to improve the public footpath; this will enhance the route visually and offer greater accessibility.  

This aerial drone footage show the progress that has been made on the new flood scheme so far:

June 2023  -local MP’s visit Stephenson Street flood defence

13 February – Construction work officially begins

Today, (Monday 13 February) work officially begins on the Stephenson Street flood scheme!

Work to clear the vegetation along the length of the scheme from Coronation Park to Liberty will be carried out over the next few weeks.

Enabling works for the raised section of highway is due to commence in March with highway cutting and sheet piling works programmed to start in April.

January 2023 – construction work set to begin

We’re pleased to announce that construction work on the flood risk management scheme is now set to get underway in February this year, with Alun Griffiths successfully appointed as the main contractor.

Find out more information in our press release

Landscaping and public space enhancements

Visualisation showing proposal for sheet pile wall and Wales Coast Path footpath upgrade.

The existing flood bund is a public footpath and also forms path of the iconic Wales Coast Path. NRW is responsible for managing and promoting the Wales Coast Path and understands the value it brings.

The proposals will require a very minor realignment of the Wales Coast Path in some areas to allow for the raising of the existing bund and the installation of a new sheet pile flood wall.

Our plans include upgrading the affected section of the Wales Coast Path, as well as improvements to the green space at Coronation Park.

A new path will be created within Coronation Park to provide better connection between  the riverside  and the sports pitches, creating a circular walking route. Viewing platforms will be integrated into the embankment to allow for resting areas and provide a connection with the riverside habitats.

Tree and wildflower planting will be provided within the park to increase local biodiversity, in addition to three urban forests providing around 1,600 new, young trees.

Additional bins will be installed to reduce litter and dog waste and new interpretation boards providing information on the project, biodiversity and heritage of the area.

Environmental considerations

The River Usk at this location is a Special Area of Conservation (SAC) and Site of Special Scientific Interest (SSSI) and extends from the river to the crest of the embankment. Parts of the embankment are also Sites of Importance to Nature Conservation (SINC) for their habitats.

Shad, a species of fish, are a feature of the SAC and are sensitive to vibration.

Historical records also show a number of protected species in the area – including Schedule one birds, otters, bats and barn owls. Surveys have also identified potential habitats for water vole, dormouse, badger and great-crested newt.

Extensive species-specific surveys within a study area have confirmed that these are not likely to be found or breeding within the affected works area. Trees near the scheme were further investigated for bat roosting potential in May 2021 and work adjacent to one tree shall be undertaken under an agreed Precautionary Method of working to reduce the potential for disturbance.

Construction of the scheme has been planned to minimise the impact on any sensitive species and habitats to ensure there is no permanent loss to protected habitats. Techniques such as ‘silent’ hydraulic machinery will be used during construction in sensitive areas to minimise noise and vibrations. The location of the proposed defences is far enough away from the river (>40m) to avoid the potential for any vibration effects on fish during their migration season.

Despite sensitive design, we’ve identified approximately 650 trees and shrubs that will need to be removed during construction. An assessment of these has identified the majority to be low value, self-seeded and stunted trees and shrubs. To mitigate e for this, we plan to replant approximately 1,600 new, young trees creating three ‘urban forests’ primarily at Coronation Park.

Outline of landscaping proposals. View the PDF file for full details.

More information about how we have considered the impact on the environment can be found in our planning application documents (scroll down for attachments).

Standard of flood protection and climate change

The proposals would increase flood protection to a one in 200-year flood event standard (this refers to a significant event which has a 0.5% chance of occurring in one year or a 63.3% chance of occuring in 200 years). This is in line with the Severn Estuary Flood Risk Management Strategy.

The proposals have been developed with climate change in mind, accounting for sea level rise and the predicted increased in rainfall over the next 50 years. We estimate that over 1,100 homes and 1,000 businesses would benefit from reduced flood risk as a result of the scheme, taking into account future climate change predictions.

More information and useful links

If you’d like more information about the scheme, please get in touch by emailing 

Visit Alun Griffiths project page: Stephenson Street Flood Defence Scheme – Griffiths Community

What happens next

The contract tendering exercise has now been completed. Work is estimated to begin on site early 2023. 


  • Liswerry
  • Newport


  • Flooding
  • Llifogydd


  • Flooding
  • Llifogydd