Phase 4 of NPI Coastal Defence Scheme

The next stage of the North Portsea Island Coastal Defence scheme is underway.

The next set of defences, the fourth of five phases which make up the £58m North Portsea Island Coastal Defence Scheme, has been split into two sections: Kendall’s Wharf and Eastern Road.

Kendall’s Wharf, the first section, has full planning permission and is due to start in November 2019. This section covers an area of approximately 300 metres starting at the northern part of Eastern Road near Kendall's Wharf. This will involve raising the road and constructing an earth embankment. To view the planning application and the technical drawings, please click here.

Artist’s impression of defences North of Sailing Club

The second section, Eastern Road, involves the construction of a sea wall along 2.1km of coastline at Eastern Road. A planning application has been submitted for this work and is currently being consulted on through the Local Planning Authority via the Portsmouth City Council website. Subject to planning approval, work should begin on these defences in September 2020. (To view the planning application that was submitted on 5th September 2019, please click here.)

A public exhibition was held on the 14th of August 2019 at the Great Salterns Mansion Harvester on Eastern Road. The aim of the event was to re-engage with the community in the lead up to construction, in particular the Harbourside Park residents and businesses along the frontage, and to display the designs and what will happen during construction. It was also an opportunity to get feedback from the public:

  • In total, 82 people attended the exhibition event.
  • 73% completely or partially support the new coastal defences at Kendall’s Wharf.
  • 65% completely or partially support the new coastal defences at Eastern Road.

*To view the material shown at this exhibition, please click here *
*To view the exhibition report, please click here*

Phase 4 of the North Portsea Island Coastal Flood Defence Scheme

New coastal defences are being built as part of the North Portsea Island Coastal Flood Defence Scheme, which have been designed to reduce the risk of coastal flooding and erosion to the area over the next century. The ESCP have successfully gained approval and Flood Defence Grant in Aid funding for £58.5million to implement these works, which when constructed, will provide one of the highest standards of coastal flooding protection in the country. The project has been split into five phases of works, three of which are complete, and the fourth phase is under construction.

Example of construction vehicles and methods at NPI Phase 1, 2 and 3

  • Phase 1 - Anchorage Park 2015 - 2016: the construction of 1.4km of earth embankment with rock revetment toe completed in 2016 at a cost of c.£5m;
  • Phase 2 - Milton Common 2016: the construction of 1.5km of a set back earth embankments and rock revetment structure, completed in 2016 at £3m;)
  • Phase 3 - Tipner Lake 2017 - 2019: iis the construction of 1.9km of a seawall which commenced April 2017 and is programmed for completion by the end of Autumn 2019;
  • Phase 4a&b – (a)Eastern Road and (b)Kendall’s Wharf 2019 - 2022: is the construction of a seawall with road raising at the entrance to Kendall’s Wharf; 
  • Phase 5 – Ports Creek 2023 - 2024: Currently going through a detailed design review which once complete will lead to the procurement of the contractor.

JT Mackley and Co. Ltd has been chosen to deliver the fourth phase of coastal defences which will protect more than 4000 homes and almost 500 businesses in North Portsea from the risk of coastal flooding. Mackley was selected from a shortlist of four expert contractors, all of whom carry extensive industry experience and produced very competitive bids.

Mackley has worked with Portsmouth City Council prior to this bid, delivering the first phase of coastal defences at Anchorage Park in 2015 which added protection to the area and vastly improved public areas with effective landscaping.