All roads around Gunnersbury Avenue will stay open during the works and there will be access to properties. However, some temporary lane closures will be needed and the area may be busier than usual.

What we are doing

We developed proposals to improve safety on this section of the A406 North Circular because of the number and severity of collisions and near misses there.

The changes will include:

  • Extension of the central reservation island between Power Road and Park Way to separate opposing traffic lanes
  • Consistent lane widths of 3.2m (nearside) and 3m (offside) to allow motorcyclists to filter safely
  • Lower speed limit - from 40mph to 30mph - to make it consistent along the A406 Gunnersbury Avenue
  • Improved cycle and pedestrian sections on the Gunnersbury Avenue western footway to match the segregated facilities on Power Road Bridge


We consulted on these plans in early 2016. Our consultation summary report can be found on the A406 Gunnersbury Avenue consultation page.

Travel advice

Consider alternative routes and allow more time for your journey where possible during construction. Visit or follow @TfLTrafficNews on Twitter for the latest road travel information.