Beta intro
Mayor of London

Hammersmith flyover

Hammersmith flyoverHammersmith flyover

This final phase of strengthening the Hammersmith flyover follows on from repairs made in early 2012. Completed in 1961, the Hammersmith flyover carries the four-lane A4 arterial road over the Hammersmith gyratory and links the west to central London.

Strengthening the flyover will prolong its life and mean no major maintenance will be required for many years, ensuring this vital part of the road network can continue serving London for years to come. Work to upgrade the central reservation is now complete, with strengthening to the structure now fully underway.

Latest travel updates

Updated Thursday 23 October

Hammersmith flyover (on deck and slip roads)

  • A4 Talgarth Road westbound off-slip lane closure, ongoing from Sunday 27 July
  • Westbound closure, 22:30-05:00, Thu 23, Fri 24, Mon 27, Tue 28, Wed 29, Thu 30 Oct
  • Eastbound closure, 22:30-05:00, Fri 31 Oct

Roads underneath the flyover

Hammersmith Bridge Road

  • Southbound road closure, 22:30-05:00, Thu 23, Fri 24, Mon 27, Tue 28, Wed 29, Thu 30 and Fri 31 Oct
  • Northbound road closure, 22:30-05:00, Mon 27, Tue 28, Wed 29, Thu 30 and Fri 31 Oct

Gyratory

  • Single lane running, 22:30-05:00, Mon 27, Tue 28, Wed 29, Thu 30 and Fri 31 Oct

Queen Caroline Street

  • Road closure, 22:30-05:00, Thu 23, Fri 24, Mon 27, Tue 28 Oct

Fulham Palace Road

  • Northbound road closure, 22:30-05:00, Thu 23, Fri 24, Mon 27, Tue 28, Wed 29, Thu 30 and Fri 31 Oct
  • Southbound road closure, Mon 27, Tue 28, Wed 29, Thu 30 and Fri 31 Oct

A4 Talgarth Road

  • Eastbound entry slip narrowing, ongoing
  • Westbound access road closure, ongoing
  • Westbound onto gyratory 2 lane closure, 21:30-05:00, Thu 23, Fri 24, Fri 31 Oct
  • Central and eastern access roads closure, 22:30-05:00, Thu 23, Fri 24, Mon 27, Tue 28, Wed 29, Thu 30 and Fri 31 Oct

How your travel may be affected

We advise drivers travelling from the M4 and the west, or to and from central London, to use the signed diversion route if possible, to avoid the A4 Great West Road through Hammersmith.

This summer we are also carrying out improvement works on Hogarth flyover and Chiswick Bridge, and Wandsworth Council is closing Putney Bridge to do major repairs.

The works have been coordinated to take place during the summer when traffic levels are significantly lower, however there may be disruption. We advise road users to plan their journeys before they travel, particularly during peak times. 

Why are we doing the work?

In December 2011, structural investigations revealed that steel cables on a number of the flyover's 16 spans had deteriorated significantly, due to corrosion caused by water seeping into the structure.

We carried out urgent strengthening work on the worst-affected spans, and now need to strengthen the remaining spans and undertake essential planned maintenance.

The first of the new strengthening cables will start being installed from August 2014 and, later this year, steel bearings within the structure will also be replaced.