Construct - Issue 51

FM CONWAY AND NATIONAL HIGHWAYS SET NEW BENCHMARK FOR LOW CARBON DELIVERY ON THE M4 GREEN ROADS AHEAD Innovation

FM Conway and National Highways have delivered a first-of-its-kind low carbon scheme on the M4, combining hydrogen and electric plant to resurface the carriageway between junctions 15 and 16. This included the first use of JCB’s hydrogen 3CX backhoe loader on the strategic road network, demonstrating how low carbon materials, innovative paving techniques and low emissions machinery can accelerate the transition to greener infrastructure. The scheme delivered a carbon saving of 50% (630 tonnes of CO2e) versus the standard design, on one of the UK’s busiest motorways, carrying over 130,000 vehicles a day. Showcasing the power of supply chain partnerships and collaboration, the scheme brought together JCB’s hydrogen 3CX backhoe loader, Sany’s electric planer and 4.5 tonne electric roller – all transported on Volvo’s electric 42 tonne lorry. The 11,000 tonne scheme was delivered over six weeks, using low carbon material. The project was delivered with support from National Highways’ Low Carbon Demonstrator Fund, which is designed to de-risk innovation and prove new concepts in real conditions.

By backing projects like this, the fund accelerates the adoption of low carbon plant, materials and methods across the strategic network, and helps set new standards for decarbonised delivery. Andy Weymouth, framework delivery manager at FM Conway, commented: “Delivering this scheme on time and to such a high standard was only possible through genuine collaboration with our partners – we all played a vital role. It took belief in a shared goal and a healthy dose of commitment to integrate the use of these new technologies effectively. “By working together, we overcame challenges and set a new benchmark for how sustainable road construction can be achieved on the national strategic network. This scheme is proof that when we unite expertise and resources, we can accelerate the transition to greener infrastructure and deliver real impact.” Angela Halliwell, Head of Carbon and Air Quality at National Highways, added: “This groundbreaking scheme on the M4 showcases how our Low Carbon Demonstrator Fund is helping turn bold ideas into real-world solutions. By supporting innovative approaches like hydrogen and electric machinery, recycled materials and advanced paving techniques, we’re proving that sustainable road construction is not only possible – it’s happening now.” The integration of hydrogen and electric machinery, the road laying method, equipment movement and material selection meant emissions were cut at every stage of the job.

FACTS Client National Highways Divisions • Surfacing • Traffic

Management • Aggregates and Asphalt

LOCATION

A40

Oxford

Cirencester

A419

A420

A34

Swindon

J16

J15

M4

Marlborough

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