Transport for London (TfL) will begin the first phase of a major programme to renew and strengthen Brent Cross Interchange overnight on 24 September, helping to ensure the long-term safety and reliability of one of London’s most important road junctions. The initial phase of the project will focus on renewing the A41 Brent Cross Flyover, with work expected to start next month and continue for up to two years.
The A41 Brent Cross Flyover is one of London’s most important road structures, with more than 120,000 vehicles using the wider Brent Cross Interchange every day. It is a vital strategic route for people, businesses and freight, connecting communities across north London and beyond. The programme has received £10.8 million of funding from the Department for Transport (DfT), allowing TfL to begin essential work to restore the flyover to full load-bearing capacity and improve its condition for decades to come.
TfL introduced a 7.5 tonne weight restriction on the flyover in October 2022 to ensure it remained safe for everyone using it. The upcoming works will strengthen the structure and allow the weight restriction to be removed once construction is completed.
Key improvements that the work will deliver include:
- Strengthening the flyover structure to enable the current safety-critical weight restriction to be removed
- Replacing safety barriers on the flyover and approach ramps, enhancing driver safety
- Installing a new waterproofing system to extend the life of the structure
- Improving the reliability of this key section of London’s road network
To allow these essential works to take place while keeping the route open, TfL will introduce a series of traffic measures from the evening of 24 September 2026, reducing the A41 Brent Cross Flyover to one lane in each direction. Drivers should expect reduced road space and longer journey times.
Stuart Harvey, TfL’s Chief Capital Officer, said:
“The A41 Brent Cross Flyover is a vital piece of London’s road network, supporting tens of thousands of journeys every day. These works are essential to ensure it remains safe and reliable for the millions of journeys that depend on it. We recognise that the work will cause disruption, and we’d like to thank local communities and road users in advance for their patience. We will do everything possible to keep people moving and encourage those in the area to plan their journey in advance while this work takes place.”
(Picture: TfL)
