A41 Brent Cross Flyover closes to one lane from 24 September for two-year repair
£10.8m Department for Transport funding will remove 7.5-tonne weight limit but cause delays until 2028
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The A41 Brent Cross Flyover will be reduced to one lane in each direction from the evening of 24 September 2026, Transport for London announced. The two-year strengthening project, costing £10.8m, aims to remove the 7.5-tonne weight restriction currently in place.
The flyover, part of the Brent Cross interchange, carries over 120,000 vehicles daily. The weight limit was introduced in October 2022 due to safety concerns. The Department for Transport allocated the funding to restore full load-bearing capacity and prevent unexpected closures.
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Disruption expected across North Circular and surrounding routes
Drivers should prepare for delays on the A41, A406 North Circular, A5 Edgware Road and A1. Transport for London will implement additional overnight and weekend closures as needed. Traffic signal improvements and targeted travel advice will be introduced to mitigate disruption.
Stuart Harvey, TfL’s chief capital officer, said the flyover is a vital part of London’s road network. He acknowledged the disruption but emphasised the long-term benefits. "We will do everything possible to keep people moving and encourage those in the area to plan their journey in advance," he said.
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These works are essential to ensure it remains safe and reliable for the millions of journeys that depend on it.
Stuart Harvey, TfL chief capital officer
Works paused for festive period to support local businesses
To minimise disruption during the busiest shopping period, Transport for London will pause the works from late November until early January. The flyover is critical for the ongoing regeneration of Brent Cross and Staples Corner, where 8,900 new homes and 26,000 jobs are planned.
The project includes strengthening the flyover, replacing safety barriers, installing new waterproofing and other upgrades. Transport for London will work with bus operators, freight partners and local councils to manage the impact and keep residents informed.
What happens next
The works begin on 24 September 2026 and are expected to last until 2028. Transport for London will publish traffic management plans and travel advice on its website. Residents and businesses can find updates at tfl.gov.uk/brent-cross-flyover.
Questions this report answers
+Why is the Brent Cross Flyover being repaired?
The flyover has a 7.5-tonne weight restriction introduced in October 2022 due to safety concerns. The £10.8m project will strengthen it to restore full load-bearing capacity and prevent unexpected closures, ensuring long-term safety for the 120,000 daily vehicles.
+How long will the works take and when will they start?
The works begin on 24 September 2026 and are expected to last two years, completing in 2028. Transport for London will pause the works from late November to early January to reduce disruption during the festive period.
+Which roads will be affected by the closures?
The A41 Brent Cross Flyover will be reduced to one lane each way. Delays are expected on the A41, A406 North Circular, A5 Edgware Road and A1. Additional overnight and weekend closures may also be introduced as needed.
+How much is the project costing and who is funding it?
The project costs £10.8m and is funded by the Department for Transport. The funding will remove the 7.5-tonne weight restriction and improve the flyover’s long-term reliability for the 120,000 vehicles that use it daily.
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