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 27 November

Hammersmith flyover (on deck and slip roads)

  • Full closure in both directions, 22:30-05:00, Thu 27 Nov
  • Eastbound road closure, 22:30-05:00, Fri 28, Sat 29 Nov, Mon 1 Dec
  • Westbound road closure, 22:30-05:00, Thu 4 Dec
  • A4 Talgarth Road westbound off-slip lane closure, ongoing from Sunday 27 July
  • A4 Talgarth Road westbound off-slip road closure, 22:30-05:00, Thu 27, Fri 28 Nov and Mon 1, Tue 2, Wed 3 Dec

Roads underneath the flyover

Hammersmith Bridge Road

  • Northbound lane closure, 21:30-05:00, Thu 27, Fri 28 Nov and Mon 1, Tue 2, Wed 3, Thu 4 Dec
  • Southbound road closure, 22:30-05:00, Mon 1, Tue 2, Wed 3, Thu 4 and Fri 5 Dec

Apollo Theatre Road

  • Road closure, 22:30-05:00, Mon 1, Tue 2, Wed 3, Thu 4 and Fri 5 Dec

    Queen Caroline Street

    • Road closure, 22:30-05:00, Thu 27, Fri 28 Nov and Mon 1, Tue 2, Wed 3, Thu 4, Fri 5 Dec

    A4 Talgarth Road

    • Eastbound entry slip narrowing, ongoing
    • Westbound access road closure, ongoing
    • Westbound onto gyratory 3 lane closure, 22:30-05:00, Thu 27 and Fri 28 Nov and Mon 1, Tue 2, Wed 3, Thu 4, Fri 5 Dec
    • Westbound onto gyratory 2 lane closure, 21:30-05:00, Mon 1, Tue 2, Wed 3, Thu 4 and Fri 5 Dec

    Bus station road

    • Northbound into station from Fulham Palace Road closure, 22:30-05:00, Thu 27 and Fri 28 Nov
    • Southbound from station into Fulham Palace Road closure, 22:30-05:00, Thu 27, Fri 28 Nov and Mon 1, Tue 2, Wed 3 Dec

    Fulham Palace Road

    • Southbound full closure, 22:30-05:00, Mon 1, Tue 2 and Wed 3 Dec

      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 was installed in August 2014, and we are now working to install the new bearings.