FM Conway hits 92% recycled materials record

10/01/2024 | DOMINIC BROWNE

FM Conway has delivered a carbon-neutral highways scheme in Westminster, laying a new road surface containing 92% recycled materials - thought to be the highest ever used on a UK road.

As Westminster City Council’s highways partner, FM Conway delivered the upgrade of the road and footways on Elmfield Way using multiple low-carbon techniques to achieve a total embodied and operational carbon saving of 78% – equal to approximately 100 tonnes of CO2 equivalent.

Residual carbon emissions were offset using high-quality Verified Carbon Standard (VCS) units, administered and certified by Verra, the world’s largest carbon registry.

Through the scheme, approximately 280 tonnes of warm mix asphalt was laid as a single layer, covering 1,600 square metres of carriageway.

FM Conway designed, manufactured, and laid a proprietary mix using a combination of three specifications of the contractor’s 14mm SureLayer E product with the addition of extra recycled aggregate.

The material contained a bespoke polymer modified bitumen to increase durability and resilience, while the asphalt was manufactured at lower temperatures and laid in a thinner layer, saving carbon and cutting resources by 30%.

In addition, the road planings were transported back to the same plant where the asphalt was made.

The full scope of works were also carried out using no fossil fuels on-site. The highways team used Hydrotreated Vegetable Oil (HVO) in the resurfacing element of the scheme, plus electric mini-excavators, disc cutters and compaction plates. A solar-powered welfare unit was also deployed, with HVO as a backup, in the footways element.

FM Conway sustainability director Matt Tallon said: 'This one-of-a-kind scheme illustrates how it is possible to stack together the best low carbon products, methods and techniques that are available today, to deliver massive carbon reductions.

'It is only once these embodied and operational carbon savings are made, should the residual carbon be offset, which in this case was done with high quality, verified ‘VCS’ carbon removal and renewable projects, as well as the planting of trees in the UK.'

Alongside the new carriageway, the scheme also involved the enhancement of the footway between the Woodfield Medical Centre and Harrow Road, as well as the installation of 11 new LED lamp columns, 200m of new cabling, and a full drainage review and cleaning.

FM Conway and Westminster City Council have a longstanding history of pioneering recycled content in highway schemes.  A trial to lay an 80% recycled content surface in Sutherland Avenue in June 2019 was followed in 2021 by a warm mix surface course containing 85% recycled content on Third Avenue in 2021.

Cllr Paul Dimoldenberg, cabinet member for city management and air quality, said: 'The use of 92% recycled materials is remarkable and a huge step in the right direction as part of the council’s commitment to creating a fairer environment. We’re not only reducing our carbon footprint but also promoting a cleaner, greener future for Westminster. This is only the start of more carbon saving initiatives we’ll be trialling in the city to get us one step closer to hitting our net-zero targets.'

Head of operations (Highways) at Westminster City Council, Phil Robson, said: 'The transition requires the use of offsets at this time but we expect to see lower reliance on them over time. A big thank you to all the excellent engineers that have worked on this project.'

Highways InProfile

latest magazine issue
Highways jobs

Electrical Design Engineer

Grade 9 £34,314 to £37,938 - Grade 10 £37,035 to £40,476 - Grade 11 £39,513 to £43,693 - Grade 12 £42,708 to £46,731 p.a.
The Construction Consultancy Services (CCS) team provide client-side construction consultancy services across a range of professional disciplines to d Durham
Recruiter: Durham County Council

Park Operations Assistant - Thorndon Country Park

Up to £12540.50 per annum
This is a permanent, part time position on an annualised hours contract. This means you will be contracted to work a minimum of 964.59 hours per yea England, Essex, Brentwood
Recruiter: Essex County Council

Principal Transport Planner (Strategy)

£46,731-£49,764
We are looking for an experienced professional to join North Northamptonshire Council as a Principal Transport Planner (Strategy). Sheerness House, 41 Meadow Road, Kettering moving to Haylock House, Kettering Parkway, Kettering NN15 6EY, United Kingdom
Recruiter: North Northamptonshire Council

Highways Capital Delivery Manager

£50,788 - £52,805
To be responsible for the implementation of Welsh Government’s Renewal and Upgrade programme. Baglan, Port Talbot
Recruiter: South Wales Trunk Road Agent

Senior Engineer x 2

£47,532 –£55,620 per annum
Our people are deeply committed to providing excellent services to our residents, doing all we can to make lives as good as they can be. Hounslow (City/Town), London (Greater)
Recruiter: Hounslow London Borough Council

Senior Highways Engineer

£50,754 – £53,607 per annum
Our people are deeply committed to providing excellent services to our residents, doing all we can to make lives as good as they can be. Hounslow (City/Town), London (Greater)
Recruiter: Hounslow London Borough Council

Highways Capital Lead

£47,754 - £50,788
To be responsible for management of the Regional Highway Capital Delivery Teams South Wales
Recruiter: South Wales Trunk Road Agent

Senior Development Management Engineer

£37,938 - £44,711
In line with our One Coventry Values, we want to ensure that our communities are represented across our workforce Coventry, West Midlands
Recruiter: Coventry City Council

Head of Highways

£66,366 - £85,284 pa
Highway Operations is a large division within the Planning, Growth & Infrastructure. Enfield (City/Town), London (Greater)
Recruiter: Enfield London Borough Council

Circular Economy Officer - FTC till the 31st March 26

£26526.00 - £31208.00 per annum + + 26 Days Leave & Local Gov Pension
... England, Essex, Chelmsford
Recruiter: Essex County Council

Director Highways, Transport & Waste Management

up to £120k
There for Nottinghamshire. There for each other. There for you. Nottinghamshire
Recruiter: Nottinghamshire County Council

Director of Highways and Transportation

£126,909
We’re seeking a dynamic and innovative leader to spearhead our Highways and Transportation services. Essex
Recruiter: Essex County Council

Senior Structures Technician

£32,654 - £36,124 plus circa £2000 - £4000 OT (variable
To lead on the planning, delivery and reporting of the highway structures General Inspection programme. Baglan, Port Talbot
Recruiter: South Wales Trunk Road Agent

Assistant Director of Place Operations

£85,962 to £93,267
Bury is a proud and prosperous borough Bury, Greater Manchester
Recruiter: Bury Council

Career Grade Transport Planner (Carer Grade 6-8)

Grade 06 (£29,093 - £32,654) TO Grade 08 (£37,938 - £41,511)
This is a fantastic opportunity to work for a forward thinking and dynamic transport authority located in the heart of the North West Warrington, Cheshire
Recruiter: Warrington Borough Council

Principal Performance and Assurance Manager

£Competitive
We have an exciting opportunity for a highly motivated Principal Performance and Assurance Manager to join our Senior Management Team SBIM Avonmouth, Bristol
Recruiter: Amey

Principal Construction Manager

£Competitive
We are excited to offer a fantastic opportunity for a Permanent Principal Construction Manager to join our dynamic Area 12 West Yorkshire
Recruiter: Amey

Electrician

£Competitive
We are excited to offer a fantastic opportunity for two Permanent Electricians Tingley, Wakefield
Recruiter: Amey

Principal Engineer – Structures Capital Delivery

£43,693 - £47,754
To act as one of the Agent's technical experts for highway structures schemes and related issues South Wales
Recruiter: South Wales Trunk Road Agent

Senior Engineer Programme Management

£36,124 - £39,513
To support the Principal Engineer ensuring effective co-ordination, programming and contract administration. South Wales
Recruiter: South Wales Trunk Road Agent
SUBSCRIBE NOW

Latest Video

Subscribe to Highways today to ensure you keep your finger on the pulse of everything happening in the UK road network throughout the year.

SUBSCRIBE NOW