Westbound A406 closed overnight as Brent Cross flyover renewal begins
The two‑year, multi‑million pound project, backed by £10.8 million from the Department for Transport, also lifts the 7.5‑tonne weight limit on the A41 Brent Cross flyover.
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Transport for London said, as reported by This Is Local London, that the westbound carriageway of the A406 North Circular will be closed from 10 pm to 5 am on 30 September. The closure coincides with the night‑time start of the Brent Cross flyover renewal, which carries the A41 over the North Circular.
Background
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The A41 Brent Cross flyover handles more than 120,000 vehicles each day, according to the same source. Since 2022 it has operated under a 7.5‑tonne weight restriction, limiting heavy goods vehicles. TfL explained that the restriction is a safety measure pending structural upgrades.
Funding and scope
The Department for Transport has provided £10.8 million for the project, as reported by This Is Local London. TfL described the scheme as a multi‑million pound, two‑year renewal that will restore the flyover to full load‑bearing capacity. Planned works include structural strengthening, replacement of safety barriers, new waterproofing and other upgrades.
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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, chief capital officer, TfL
Impact on drivers
TfL warned that lane restrictions will affect the A41 Hendon Way from 1 October until 28 October, and a contraflow system will operate on the flyover from 29 October, reducing road space in both directions. The agency advised motorists to allow extra travel time, check the Brent Cross flyover renewals project page and consider alternative routes such as the A5 or local streets.
The next formal step is the ongoing monitoring of works throughout the two‑year period. TfL will issue further updates on lane configurations and any additional closures. Residents can sign up for email alerts on the project page to stay informed about future disruptions.
Questions this report answers
+When will the A406 be closed for the flyover works?
The westbound A406 North Circular will be closed from 10 pm to 5 am on 30 September. The closure marks the overnight start of the Brent Cross flyover renewal and is confirmed by Transport for London in reports from This Is Local London.
+How much funding is the project receiving?
The Department for Transport has allocated £10.8 million to the renewal scheme. TfL said the funding will cover structural strengthening, safety barrier replacement, waterproofing and the removal of the existing weight restriction, as reported by This Is Local London.
+What will happen to the weight restriction on the flyover?
The works aim to restore the A41 Brent Cross flyover to its full load‑bearing capacity, removing the 7.5‑tonne weight restriction that has been in place since 2022. TfL confirmed this outcome in its project brief.
+What should drivers do during the October lane restrictions?
Drivers should expect lane restrictions on A41 Hendon Way from 1 October to 28 October and a contraflow system on the flyover from 29 October. TfL advises allowing extra travel time, checking the project page for updates and using alternative routes where possible.
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