A4 and M4 closures 24 – 27 March

Image above: A4 / Cromwell Railway Bridge

Significant congestion likely 

Sections of the A4 and M4 will be closed this weekend, and significant congestion is expected in Chiswick and Brentford as a result.

The M4 will be shut from 10.00pm on Friday 24 March to 5.00am on Monday 27 March eastbound between Hogarth Roundabout and Junction two.  There will also be a closure of one lane westbound between Hogarth Roundabout and Chiswick Roundabout.

This is a continuation of work on Cromwell Railway Bridge near Harvard Hill. Originally it was due to be completed in December, but work was postponed on several occasions because of the Queen’s funeral and periods of severe weather.

Roadworkers will also be resurfacing the A4’s junction with Sutton Court Road.

Transport for London says work on this section of the A4 will be now completed by mid-2023.

Night time work is also taking place from Tuesday 21 March and Wednesday 22 March from 10.00pm to 5.00am.

This will require the closure of the A4 (westbound) between Chiswick Roundabout and Hogarth Roundabout with no access from all routes leading onto the A4 westbound between these points. There will also be no access to Sutton Court Road from the A4 westbound.

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