Transport for London (TfL) has announced that work to install seven expansion joints on the A40 between Wood Lane and the Marylebone Flyover has been completed.
The A40 is used by around 96,000 vehicles each day, with the section of the elevated A40 spanning approximately 4.5km through the London boroughs of Kensington and Chelsea, Hammersmith and Fulham, and the City of Westminster.
The bridge structures that support the carriageway and slip roads were built more than 50 years ago using reinforced concrete and, due to variable weather conditions, required major maintenance to keep the road network running.
Construction engineering company Costain Group carried out concrete repairs, resurfacing and ancillary works to improve safety and reliability.
As part of a previous package of works, Costain also replaced an additional critical roller expansion joint on the A40 Westway.
This included creating temporary bridging cover plates that mitigated movements caused by changeable weather whilst the joint replacements were carried out, as well as trialling the installation process for each comb joint offsite.
This enabled the successful completion of the most complex joint replacement, which ran over the A404 and required live traffic to operate continuously on the carriageway.
Transport for London project manager, Charlotte Day, said: “The A40 Westway is a critical transport artery into the nation’s capital that has required essential maintenance works.
“Costain and its supply chain has worked efficiently and innovatively to replace the joints that will ensure the road can continue to run safely and reliably for years to come.
“This has all been achieved with the least disruption possible to people using the road and living in the area.”
Achievements and innovations in road maintenance will be recognised and celebrated at the fourth annual CiTTi Awards on 25 November 2025 at De Vere Grand Connaught Rooms in London. Visit www.cittiawards.co.uk to learn more about this unmissable event for the UK’s transportation sector!
