Coastal marine construction & infrastructure (civil engineering) https://jonesbrosruthin.co.uk/category/case-studies/coastal-marine-infrastructure/ Providing a sustainable future Mon, 23 Mar 2026 18:40:58 +0000 en-GB hourly 1 https://wordpress.org/?v=6.9.4 Jones Bros’ role on Dogger Bank will help provide sizeable economic boost to UK economy https://jonesbrosruthin.co.uk/jones-bros-role-on-dogger-bank-will-help-provide-sizeable-economic-boost-to-uk-economy/ Tue, 09 Dec 2025 14:50:39 +0000 https://jonesbrosruthin.co.uk/?p=10930 Jones Bros Civil Engineering UK’s work on Dogger Bank Wind Farm will help boost the country’s economy by an eye-catching £6.1 billion. The world’s largest offshore wind farm will be capable of generating enough power [read more]

For further info on this, please click here Jones Bros’ role on Dogger Bank will help provide sizeable economic boost to UK economy.

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Jones Bros Civil Engineering UK’s work on Dogger Bank Wind Farm will help boost the country’s economy by an eye-catching £6.1 billion.

The world’s largest offshore wind farm will be capable of generating enough power for around six million UK homes each year once fully operational.

As a tier one contractor, Jones Bros was responsible for the installation of onshore cable infrastructure for the Creyke Beck grid connections in East Riding of Yorkshire.

The Ruthin-headquartered firm was also appointed to deliver the enabling works package for the onshore converter station platforms for Dogger Bank C in a joint contract with neighbouring Sofia Offshore Wind Farm.

Jones Bros is also responsible for delivering trenching, duct installation, and joint bays for the 2km connection for the third phase of the wind farm, near Redcar, and the National Grid infrastructure at Lackenby on Teesside.

A report written by economic consultants BVG Associates highlighted that the 10-figure sum is driven by significant investment in UK companies, jobs, and skills during the wind farm’s lifecycle.

Jones Bros certainly played its part with:

  • Around 85 per cent of its contract value delivered by itself or UK-based companies, with 55 per cent of subcontracted work awarded to firms in the north east.
  • More than 230 jobs supported, including 115 directly and 116 indirectly through the supply chain.
  • Eight higher apprentices, including one from the north east, working on Dogger Bank as part of the company’s development plan.
  • 46 plant operatives and groundworkers, including 12 local recruits, on site, with around 30 per cent retained upon completion.

Jones Bros senior contracts manager James Lockwood said: “We are always eager to give our apprentices and trainees valuable on-site experience, and as the world’s largest offshore wind farm, Dogger Bank is a hugely significant project to be a part of.

“The numbers speak for themselves, and I know it has always brought everyone from senior managers to trainees and apprentices a great sense of pride to be associated with the scheme.”

The report was commissioned by Dogger Bank’s equity partners SSE, Equinor, and Vårgrønn, who are currently constructing the offshore wind farm in three 1.2GW phases at adjoining sites in the North Sea more than 130km from the Yorkshire coast.

Energy minister Michael Shanks said: “Clean, homegrown power is the right choice for families and industry right across the country. Wind power is cheaper, cleaner, and more secure than new gas – helping us bring down bills for good.

“As shown by this independent report, offshore wind projects such as Dogger Bank will generate billions for the UK, while also delivering thousands of good jobs – showing once again that clean power is the economic opportunity of the 21st century.”

Dogger Bank Wind Farm project director, Olly Cass, said:  “People have always been at the heart of everything we do on Dogger Bank Wind Farm. Even from the early days of planning, there was an inherent drive from everyone involved to see what value we could unlock through this extraordinary engineering masterpiece.

”Offshore wind is a global sector with a global supply chain, but this report proves we have the skills, expertise, and desire in the UK to fuel the energy transition and create economic value that’s far-reaching.

“The ripple effects of our UK spend, generating £6.1 billion for the UK economy, can be felt from the Highlands of Scotland, down to the south coast, and plenty more in between.”

The full report can be found here: https://doggerbank.com/wp-content/uploads/2025/11/Dogger-Bank-Wind-Farm-economic-impact-report-by-BVG-Associates.pdf

Established in the 1950s, Jones Bros owns one of the largest plant fleets in the UK and employs approximately 500 people.

The company is currently working on contracts in various sectors including highways, flood and marine defence, reservoirs, waste management and renewable energy around the UK.

The company runs an award-winning apprenticeship scheme, which has produced nearly 40 per cent of its current workforce, with many of its senior managers having started out as apprentices or in a trainee role. It has recruited more than 100 apprentices during the past three years.

For further info on this, please click here Jones Bros’ role on Dogger Bank will help provide sizeable economic boost to UK economy.

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Clacton to Holland on Sea, Essex – Coastal protection scheme https://jonesbrosruthin.co.uk/clacton-holland-sea-essex-coastal-protection-scheme/ Tue, 22 Nov 2016 16:49:28 +0000 http://jonesbrosruthin.co.uk/?p=3604 Jones Bros operated as a sub-contractor to principle contractor VBA Joint Venture, to construct Phase 1: 8 rock groynes and Phase 2: 15 rock groynes, for the Clacton to Holland-on-Sea coastal protection scheme. The £36m coastal [read more]

For further info on this, please click here Clacton to Holland on Sea, Essex – Coastal protection scheme.

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Jones Bros operated as a sub-contractor to principle contractor VBA Joint Venture, to construct Phase 1: 8 rock groynes and Phase 2: 15 rock groynes, for the Clacton to Holland-on-Sea coastal protection scheme.

The £36m coastal protection scheme required approximately 270,000 tonnes of rock to construct the groynes, which will protect more than 3,000 properties from sea erosion. In order to meet the demands of the challenging scheme, Jones Bros utilised the latest GPS technology and had to work around local tidal tables.

Plant used to move rock for the new groynes into place was upgraded to include Trimble GCS900 Grade Control Systems. The GPS system, which allows accurate control of buckets and blades to within 20mm, allowed Jones Bros plant operatives to accurately install the rock groynes in water up to 150cm in depth.

For further info on this, please click here Clacton to Holland on Sea, Essex – Coastal protection scheme.

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Llanddulas jetty demolition https://jonesbrosruthin.co.uk/llanddulas-jetty-demolition/ Tue, 22 Nov 2016 16:19:45 +0000 http://jonesbrosruthin.co.uk/?p=3598 The demolition and removal of existing and dangerous jetty structure, elevated conveyor system and associated buildings. The jetty was connected to the conveyor station building, which was a large concrete structure, with the conveyor system [read more]

For further info on this, please click here Llanddulas jetty demolition.

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The demolition and removal of existing and dangerous jetty structure, elevated conveyor system and associated buildings. The jetty was connected to the conveyor station building, which was a large concrete structure, with the conveyor system continuing inland, passing beneath the busy A55, Network rail line, Sustrans route and A547, to the now redundant quarry.

Work included:

  • Demolition and removal of jetty’s timber and steel piles, which were firmly embedded 2m below the sea bed – all undertaken during the workable timeframe of the low tides.
  • Demolition and removal of conveyor system and connecting conveyor station building – carried out by high-reach excavators fitted with specialist hydraulic munchers and shears.
  • Crushing of broken concrete to produce 6F2 for use as infill
  • All other demolition material suitable for recycling was transported off site for re-use
  • Translocation (in part) of crustaceans (Sabellaria) from timber/steel piles for re-growth
  • Manned crossing points and beach marshalls deployed to ensure safety access to beach front for members of the public

For further info on this, please click here Llanddulas jetty demolition.

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Pwllheli Sailing Academy & Events Centre https://jonesbrosruthin.co.uk/pwllheli-sailing-academy-events-centre-2/ Tue, 22 Nov 2016 15:09:21 +0000 http://jonesbrosruthin.co.uk/?p=3581

For further info on this, please click here Pwllheli Sailing Academy & Events Centre.

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  • Dredging 83,000m³ of material and removal off-site for recycling – to maintain sailing channel and accommodate additional berths
  • Construction of new access to marina extension
  • Construction of 140m containment bund
  • Construction of 80 linear/m of sheet pile walling and capping beam for new quay wall
  • Installation of new flexible pontoon berths and pedestrian linkspan
  • All works carried out in an environmentally sensitive area, using in-house plant and labour.
  • The project vision was to create a sailing academy and events centre that maximises the potential afforded by the natural location and world class sailing waters around Pwllheli. The works incorporated maintenance and capital dredging, construction of a quay wall, mooring pontoons and a pedestrian linkspan. The proposed 83,000m3 of dredgings was to be removed off site, however, as part of our ‘value engineering’, we proposed an alternative solution of retaining all the dredged arisings on site, to be utilised as either beach recharge material or as a reclamation area, which could then be used to enhance the local wildlife. This method gave a saving to the Client of approximately £1.5m. Planning approval and marine consent was provided in December 2013 and works commenced in January 2014. The project was completed in July 2014.]]>

    For further info on this, please click here Pwllheli Sailing Academy & Events Centre.

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    Pwllheli Sailing Academy & Events Centre https://jonesbrosruthin.co.uk/pwllheli-sailing-academy-events-centre/ Tue, 22 Nov 2016 15:09:21 +0000 http://jonesbrosruthin.co.uk/?p=3581 Dredging works and infrastructure for new Pwllheli Sailing Academy building. Works included: Dredging 83,000m³ of material and removal off-site for recycling – to maintain sailing channel and accommodate additional berths Construction of new access to [read more]

    For further info on this, please click here Pwllheli Sailing Academy & Events Centre.

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    Dredging works and infrastructure for new Pwllheli Sailing Academy building.

    Works included:

    • Dredging 83,000m³ of material and removal off-site for recycling – to maintain sailing channel and accommodate additional berths
    • Construction of new access to marina extension
    • Construction of 140m containment bund
    • Construction of 80 linear/m of sheet pile walling and capping beam for new quay wall
    • Installation of new flexible pontoon berths and pedestrian linkspan
    • All works carried out in an environmentally sensitive area, using in-house plant and labour.

    The project vision was to create a sailing academy and events centre that maximises the potential afforded by the natural location and world class sailing waters around Pwllheli. The works incorporated maintenance and capital dredging, construction of a quay wall, mooring pontoons and a pedestrian linkspan.

    The proposed 83,000m3 of dredgings was to be removed off site, however, as part of our ‘value engineering’, we proposed an alternative solution of retaining all the dredged arisings on site, to be utilised as either beach recharge material or as a reclamation area, which could then be used to enhance the local wildlife. This method gave a saving to the Client of approximately £1.5m.

    Planning approval and marine consent was provided in December 2013 and works commenced in January 2014. The project was completed in July 2014.

    For further info on this, please click here Pwllheli Sailing Academy & Events Centre.

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    Tywyn Coastal Defence Scheme https://jonesbrosruthin.co.uk/tywyn-coastal-defence-scheme/ Wed, 17 Jul 2013 09:42:24 +0000 http://jonesbrosruthin.co.uk/?p=127 Work to restore Tywyn’s depleted sea defences involved approx 60,000 tonnes of armour stone being delivered by sea and road, following the removal of existing timber groynes. The scheme comprised: Removal of existing timber groynes [read more]

    For further info on this, please click here Tywyn Coastal Defence Scheme.

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    Work to restore Tywyn’s depleted sea defences involved approx 60,000 tonnes of armour stone being delivered by sea and road, following the removal of existing timber groynes.

    The scheme comprised:

    • Removal of existing timber groynes
    • Construction of a rock armour breakwater, and placement of 15,000 tonnes of beach nourishment
    • Installation of rock groynes and a rock revetment
    • Replacement of the groyne field, salvaging existing planks where practical and reusing/recycling the steel and timber
    • Reconstruction/repair of slipways and access steps, including concrete steps along length of promenade and construction of viewing platform

    The scheme was funded by the Welsh Government and European Regional Development Fund, as part of the Convergence programme.

    For further info on this, please click here Tywyn Coastal Defence Scheme.

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    Terminal 3 Development https://jonesbrosruthin.co.uk/terminal-3-development-holyhead/ Wed, 17 Jul 2013 09:41:57 +0000 http://jonesbrosruthin.co.uk/?p=125 The scheme involved the construction of an offshore rock breakwater containing more than 150,000 tonnes of locally produced rock core and armour, plus the infilling of 240,000m3 of dredged sand. Dredged sand was collected from [read more]

    For further info on this, please click here Terminal 3 Development.

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    The scheme involved the construction of an offshore rock breakwater containing more than 150,000 tonnes of locally produced rock core and armour, plus the infilling of 240,000m3 of dredged sand. Dredged sand was collected from a licensed area in Morecambe Bay and discharged hydraulically behind the breakwater via a 750mm diameter delivery pipe, which extended 1km out to sea to a mooring buoy, at which the dredger berthed. The total area of reclamation was approximately 40,000m2 of which a third received permanent full construction of a stone capping layer, stone sub-base, dense bitumen macadam road base with 80mm key-block paving in order to take the heavy duty port traffic.

    For further info on this, please click here Terminal 3 Development.

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    Deganwy Marina Construction https://jonesbrosruthin.co.uk/deganwy-marina-construction/ Wed, 17 Jul 2013 09:41:32 +0000 http://jonesbrosruthin.co.uk/?p=123 A boating marina was built adjacent to an existing quay, as part of a prestige housing and hotel complex. The work involved: Construction of a rock breakwater projecting 170m into the environmentally sensitive River Conwy [read more]

    For further info on this, please click here Deganwy Marina Construction.

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    A boating marina was built adjacent to an existing quay, as part of a prestige housing and hotel complex.

    The work involved:

    • Construction of a rock breakwater projecting 170m into the environmentally sensitive River Conwy estuary
    • Formation of 70m x 250m sheet steel pile containment structure
    • Excavation to formation level within the steel-piling box, with unsuitable estuarine silt being removed from site to tip
    • Use of sand and gravel to raise the level of the surrounding development land

    A pre-cast concrete harbour wall surmounting the piling was completed with an insitu concrete capping beam.

    In addition, a dock gate was constructed along with new access roads, a level crossing and associated drainage and infrastructure works.

    For further info on this, please click here Deganwy Marina Construction.

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