Westway Rd closure diverts traffic through Chiswick

Motorists could face months of traffic chaos as west London’s main road into central London, the A40 Westway, undergoes urgent and essential maintenance. As traffic is diverted, the A4 through Chiswick is expected to become a lot busier.

The first round of work began on Friday, 26 November and ended Monday, 29 November. In order to disrupt the least amount of traffic, the road closures are taking place on weekends, when traffic is usually quieter.

The A40 Westway is one of London’s busiest with around 100,000 vehicles per day using it. Much of it is elevated, with concrete pillars constructed more than 50 years ago. The joints between concrete sections now need replacing.

The road is also used particularly by heavy goods vehicles as it is the main route between central London and Heathrow airport. The flyover sections also need to be waterproofed to ensure they meet modern road standards and to prevent flooding underneath.

Image above: Map of diversion showing the section of the A40 Westway which is closed

When will the A40 Westway be closed?

For the first four months, all road closures will take place on the eastbound carriageway (from White City/West Cross Route to Marylebone Rd). The westbound carriageway out of Central London towards White City/West Cross Route will remain open but will only have two lanes of traffic operational.

The eastbound carriageway will be closed:

  • from 10pm this Friday, November 26 to 5am Monday, November 29
  • from 10pm Friday, 3 December to 5am Monday, December 6
  • from 10pm Friday, 10 December to 5am Monday, December 13
  • at various points every weekend from Saturday, 8 January to mid-March 2022

The westbound carriageway will then be closed at various points on weekends between mid-March 2022 and Monday July 18, 2022.

The road will remain open fully on and around Christmas and Easter weekends.

Image above: Cyclists

Alternative routes

TfL  is advising motorists heading into London to use the A4 and M4 or the A406 instead.

Drivers leaving London travelling from east London are advised to use alternate routes including the A406. TfL expect the A501, all local routes and the suggested diversion through Chiswick to be busy.

TfL said footpaths and pedestrian crossings will remain open ‘wherever possible’, although there may be some temporary closures or diversions.

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