Motorists are advised to be prepared for delays as major repairs to strengthen Chiswick Bridge are due to enter the final stage of works next week.
The Grade II listed structure will be closed for three weekends to replace the expansion joints buried in the carriageway as well as fully resurface the road.
Transport for London (TfL) said planned closures will begin on Saturday (February 21) at 1am until Monday February 24 at 4am; and between February 28 and March 2; and March 7 until March 9.
During this time pedestrians and cyclists will have access to one of the footpaths but road traffic will be placed on diversion, and the 190 bus will be diverted over Kew Bridge.
TfL have placed roadside messages to alert drivers of the closure and sent letters out to local residents to notify them.
There is some good news, as the 80-year-old bridge which crosses the River Thames in west London is on track to be fully restored by May 2015, with major work completed in time for the annual Oxford and Cambridge boat race in April.
Nick Fairholme, TfL’s Director of Projects & Programmes for Surface Transport, said: “Chiswick Bridge is a much-loved heritage structure in west London, providing a vital river crossing as well as an excellent viewing point for the annual Boat Race.
"The important refurbishment work we are carrying out is progressing extremely well - however, there are some aspects that, unfortunately, just cannot be completed without full weekend closures.
"We are committed to keeping the disruption caused by these closures to a minimum.”
The bridge, which was opened in July 1933, carries about 40,000 vehicles and hundreds of cyclists and pedestrians daily.
Once complete, the bridge will be usable for many years to come.
Waterproofing of footpaths is now under way to protect the internal structure and improve drainage.
Once this work is finished, footpaths will be re-opened with a new walkway and cycle way, and in March new heritage lighting will be installed.
Refurbishment works began in April last year after it became apparent some sections of the bridge had started to deteriorate and needed to be replaced.
So far the project has seen the structure of the bridge repaired and its heritage features restored; extensive concrete repairs completed; and the strengthening of bridge parapets are 90% complete.
Stephen Senior, English Heritage assistant inspector of historic buildings, said: “Although the scale of the works has been extensive, we have been heartened by the conservation minded approach taken by TfL and all their contractors, enabling them to deliver a refurbished structure which retains all of the historic characteristics for which it was originally listed.”
The restoration of Chiswick Bridge forms part of TfL’s continuing £4bn road modernisation plan. For more information go online.