Major Harbour Wall Replacement Work Resumes on Weymouth Peninsula
Work to repair and replace the ageing harbour walls at Weymouth’s Peninsula has resumed this week, with large steel sheet piles now being installed in front of the existing crumbling walls.
The sheets of metal, which bolt together to form a new seawall, are being vibrated into the ground rather than traditionally hammered. This method significantly reduces noise and environmental disturbance, although some noise and vibration remain unavoidable.
The works are described as essential, with engineers warning that without intervention the existing seawalls could soon fail. A collapse of the walls would place the main structure of the Peninsula at serious risk.
Once complete, the new harbour walls are expected to make the Peninsula structurally sound for at least the next 70 years and provide increased protection for nearby homes and businesses against predicted sea level rise.
The project focuses on two seawalls supporting the Peninsula: Wall F to the northeast and Wall G to the northwest of the existing car park. Following preliminary works in September 2025, construction began in earnest in October after contractor Knights Brown established the site.
To allow access for specialist piling machinery, a Temporary Traffic Regulation Order (TTRO) was introduced on 13 October. Temporary traffic lights are currently in place near the Pavilion Beach end of the site, where access to and from the Pavilion car park has been reduced to a single lane. Part of the car park has also been fenced off to accommodate construction equipment, site offices, storage and welfare facilities.
Noisy pile-driving works were originally delayed due to statutory approvals and unforeseen subsurface conditions, which required changes to the design and construction approach. These challenges also led to delays in procuring long-lead items. The vibration-based piling is now underway and will continue until mid-March, with work taking place between 8am and 6pm, Monday to Friday. The overall project is expected to be completed by late summer 2026.
Council officers say they are working closely with Environmental Protection colleagues to ensure the works meet required standards and minimise disruption to residents and visitors.
As part of the scheme, the new harbour walls will be higher in places than the existing structures. Once piling is complete, raised viewing points and a new walkway will be constructed, designed to maintain unobstructed views across the sea and towards the Jurassic Coast.
Looking further ahead, the council has long-term ambitions to redevelop the Peninsula with a mix of residential, commercial and community-led spaces. While no detailed plans have yet been drawn up, the harbour wall works are seen as a vital first step in making any future development possible.
The regeneration of the Peninsula formed a key part of the council’s successful 2022 Levelling Up funding bid, which secured £19.5 million in 2023 to support the wider regeneration of Weymouth’s waterside economy.
The council says it will continue to work closely with the town council and local community throughout the project. Drop-in sessions are planned for later this month, giving residents the opportunity to meet the project team, ask questions and raise any concerns. Details will be advertised once finalised.
Further information about the Peninsula Harbour Walls repair and replacement scheme can be found on the council’s website, and enquiries can be sent to weymouthharbourwalls@dorsetcouncil.gov.uk.