Mersey Gateway Bridge

We were tasked with the reinstatement of the salt marshes along the Mersey Estuary that had been destroyed following the construction of the Mersey Gateway Bridge.

During construction, over 250,000 tonnes of aggregates were placed on-site to create a platform that allowed construction equipment to access the development.

  • CLIENTKier Construction

  • LOCATIONWidnes, Runcorn

  • SERVICESLeisure Space Restoration, Land Remediation, Biodiversity Development, Habitat Creation

The Process

Working alongside the Mersey Gateway Environmental Trust, we recovered all aggregate materials on site. We adopted a sustainable approach of recycling the aggregates  to allow for redistribution back into the market.

With access to the ground, our engineering team began to create drainage channels and habitat pathways that would allow the salt marsh to effectively flood. This flooding allows the river water to drop its nutrients for new habitats to flourish.

Since the completion of the project, the environmental impacts have been incredibly positive with an increase in biodiversity visible on site.

mersey gateway the process
Mersey gateway environmental trust

We can already see changes shortly after the removal of the material – early colonisers are starting to emerge on the salt marsh and we are expecting a fully established salt marsh vegetation in the next years. The installed ponds add important features to the marsh, contributing to the diversity of species attracted to the salt marsh, in particular estuarine birds.

Mersey gateway environmental trust
Andrea Drewitt Biodiversity Manager - Mersey Gateway Bridge
LET'S TALK

GET IN TOUCH WITH OUR TEAM TODAY

Book your consulation