Kyowa Filter Unit Rockbags

After considering the use of Kyowa Filter Unit Rockbags on other projects, the TEAM2100 team decided to use them in temporary works to support a failing wall on the River Thames. TEAM2100 is a collaborative team from the Environment Agency, CH2M and Balfour Beatty. This programme will deliver the first 10 years of capital investment […]


Kyowa Filter Unit Rockbags

Made from 99% recycled material, The Kyowa Filter Unit Rockbag is a flexible bespoke net system filled with stone which can be used to protect marine structures and riverbanks against the phenomenon known as scour. Ridgeway’s Filter Unit Rockbags have been successfully used by a team from the Environment Agency and VolkerStevin, Boskalis Westminster and […]

Minesto deploys Kyowa Filter Unit Rockbags

Kyowa Filter Unit Rockbags

Using local stone and labour Ridgeway filled 25 x 4t filter unit rockbags and delivered them under crane hook to Minesto’s installation contractor in Holyhead. Please click here for more information on our Filter Unit Rockbags. If you would like to speak to a member of the Ridgeway Marine Team please call Belfast +44 (0) […]

Mott MacDonald Approves Filter Unit

Ridgeway provided Vinci Construction with a range of filter units (1, 2 & 4 tonne) for scour protection of a flood wall on a NET tram project.  The tram line located in Nottingham passes a flood storage area that experiences various levels of water annually. Ultimately this required scour protection at the base of the flood wall to […]

Rivers Agency install Units in Camlough

Filter unit being installed in Camlough

Over the past few years the Rivers Agency has been utilising the filter units system for a number of different projects throughout Northern Ireland. The most recent of these was temporary application to protect the foundations of an abutment which had been experiencing high volumes of water due the winter season rainfall and the overflow […]

Innovative use of Filter Units at Sea Coastal Defence Scheme

Boskalis Install Filter Units on Clacton and Holland on Sea Coastal Defence Scheme

Boskalis Westminster UK installed 4T Eco-green filter units to allow water to flow freely from a number of outlet pipes located along the sea front of the Clacton and Holland-on-Sea beaches. The filter unit is a scour protection solution, however, innovative thinking from the consulting engineers, Mott MacDonald, recognised the filter units versatility and applied it […]

Mersey Gateway presents challenging tidal conditions for Filter Units

Mersey Gateway tidal project

The Mersey Gateway is currently the largest new build bridge project to take place in the North West of England. During the first 6 months of 2015, Ridgeway worked closely with the project’s Senior Engineers supplying the 4T filter unit for scour protection of the North Cofferdam and later the Central Cofferdam. The Mersey Estuary […]