Associated Asphalt has completed a six-month maintenance programme covering the 75km section of the M40 between Oxford and Warwick.
The contractor supplied and laid more than 35,000t of asphalt as part of UK Highways’ M40 Design, Build, Finance and Operate contract, delivered in conjunction with National Highways. The works began on 2 March and concluded at the end of August.
Targeted pavement repairs
Deteriorated surfacing was removed and replaced with compliant pavement finished in 10mm Stone Mastic Asphalt. Associated Asphalt said the treatment would provide a durable, high-performance surface while reducing road noise and spray.
The company supported the programme with a new asphalt plant at Yarnton, Oxford, which has an annual production capacity of 100,000t. It said local production improved security of supply and reduced the scheme’s carbon footprint by limiting vehicle movements on the Strategic Road Network.
Works were carried out during overnight shift windows, with the contractor saying its delivery approach was designed to minimise disruption and maintain safe working conditions.
Long-running partnership
The programme is the latest phase of an 11-year partnership between Associated Asphalt and UK Highways. Previous M40 projects have included refurbishment of the 500m-long Loudwater Viaduct, deep construction maintenance between Junction 1 and Junction 1A, and works around Junction 1A.
UK Highways’ 30-year DBFO contract for the London-to-Birmingham M40 is due to conclude in early 2027. Associated Asphalt said it remains in discussions with UK Highways about further projects.
Associated Asphalt area manager for the M40 Chris Taylor said: “From the outset, our focus was to deliver the works safely, efficiently, on time and on budget, while providing durable, fit-for-purpose solutions that keep this vital London-to-Birmingham route moving.”
UK Highways M40 senior general manager Gareth Llewelyn said the project required “a careful mix of technical expertise, responsiveness and commitment” to minimise disruption while maintaining standards.

