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.
Hammersmith Bridge Road
Queen Caroline Street
Fulham Palace Road
A4 Talgarth Road
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.
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.