Tower Bridge is to close for three months for substantial structural repair work and maintenance by Bam Nuttall.
The works include replacement of the timber decking on the bascules, which has not been replaced since the 1970s. There will also be corrosion prevention and repair operations, replacement of worn expansion joints, resurfacing of fixed roads and walkways, waterproofing of approach viaducts, an overhaul of key mechanical and lift components and general cleaning and repairs.
The bridge has more than 40,000 people and 21,000 vehicles crossing it every day.
City of London Corporation’s planning and transport committee chairman Chris Hayward said: “We will use this time to repair, refurbish, and upgrade London’s most iconic bridge, which has gone without significant engineering works for more than 35 years.
“We will work hard to minimise disruption to both pedestrians and motor vehicles, and the bridge’s viewing walkways and exhibitions will stay open for the entirety of the works.”
The 122-year-old bridge will close on 1 October 2016, although pedestrians will still be able to cross except for three weekends when a free replacement ferry service will be availablr. The bridge’s viewing gallery will also remain open.