Brent Cross Flyover repairs start 24 September 2026 with two-year closures
TfL will close lanes overnight and at weekends while strengthening the A41 structure in Hendon
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Named TfL chief and specific start date give some corroboration, but no documents are cited.
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Transport for London will begin a two-year programme to strengthen the Brent Cross Flyover on 24 September 2026. The A41 structure carries 120,000 vehicles each day between Hendon and Brent Cross. TfL confirmed the start date and duration in a statement to MyLondon.
The project will replace safety barriers, install a new waterproofing system and strengthen the flyover. TfL expects to remove the 7.5-tonne weight restriction once the works finish. The restriction has been in place since October 2022.
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Closures and diversions
From the evening of 24 September, the flyover will reduce to one lane in each direction. TfL will close lanes overnight and at weekends at different stages. Signed diversion routes will direct traffic onto surrounding roads, including the A406 North Circular, A5 Edgware Road and A1.
TfL will pause all works between late November and early January each year. The pause will allow shoppers and businesses to reach Brent Cross Shopping Centre without disruption during the festive period.
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What happens next
TfL will update residents and drivers before each closure. Future phases of the Brent Cross Interchange renewal will include the mid-level roundabout and A406 slip roads. No start dates have been announced for those works.
“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.”
Stuart Harvey, TfL Chief Capital Officer
Questions this report answers
+When will the Brent Cross Flyover repairs start?
The works begin on 24 September 2026. TfL will reduce the A41 to one lane in each direction from that evening. The project is expected to last up to two years, with closures paused over Christmas.
+How long will the 7.5-tonne weight limit stay in place?
The 7.5-tonne weight restriction will remain until the Brent Cross Flyover repairs finish. TfL expects to remove it once the strengthening works are complete, which could take up to two years.
+Which roads will be affected by diversions?
Diversions will use the A406 North Circular Road, A5 Edgware Road and A1. TfL will provide signed routes and update drivers before each closure. Weekend and overnight lane closures will cause delays.
+Will the works stop over Christmas?
Yes. TfL will pause all works between late November and early January each year. The pause will allow shoppers and businesses to reach Brent Cross Shopping Centre without disruption during the festive period.
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