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Sustainability key to unlocking potential of Caernarfon and Bontnewydd bypass5th Apr 2022
Sustainability was always high on the agenda for the Caernarfon and Bontnewydd bypass – and the ability to identify opportunities to make the scheme more environmentally beneficial certainly paid off.
A total of 4,100 tonnes of CO2 was saved by the Balfour Beatty Jones Bros Joint Venture using on-site routes and a further 1.7 million miles were prevented using public highways.
In addition, surplus material generated from the project was disposed of in Seiont Quarry, saving 600,000 tonnes of disposal in external landfills.
Commitments were made at early contract involvement stage, with an adjustment to the land take and designs to improve logistics and reduce carbon footprint, followed by the purchase of Seiont Quarry and brickworks adjacent to the project that provided fill materials and a disposal facility of inert soils.
This in turn significantly reduced the usage of CO2 for site works, reducing impact on local traffic which resulted in further decreased carbon emissions.
Some four million tonnes of earth and rock were moved to create the bypass, and this was made possible using the 10km site haul road, which ensured that all materials were moved using site dump trucks working within the site boundary, thereby avoiding using the public highway.
A further 200,000 public highway journeys were also avoided with the site team re-using 700,000 tonnes of rock blasted and excavated on-site as construction aggregates for use in pavement layers and structures backfill, which reduced the need to import aggregates.
Sam Higgitt, environmental manager for Jones Bros, said: “Sustainability has been at the heart of Jones Bros’ operations and activities for decades, and the numbers on this scheme really speak for themselves.
“To see that more than 4,000 tonnes of CO2 was saved shows how important planning and identifying opportunities to become more environmentally friendly really are.
“It’s been a wonderful project to be a part of and seeing the ways in which we have helped limit any impact on the environment is fantastic.”