City of London Corporation said the closure would take place from 1 October in order to replace the decking on the bascules and carry out corrosion prevention and repair operations as part of other work.
Chris Hayward, chairman of the planning and transport committee, commented: “This decision to close Tower Bridge to vehicles has not been taken lightly, and this course of action has been taken after extensive consultation and planning in conjunction with numerous stakeholders.
“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.”
Leon Daniels, MD of surface transport at Transport for London, added: “We’ve been working closely with the City of London to minimise the impact of the vital refurbishment of Tower Bridge and to ensure that Londoners have the travel advice they need.
“Our advice to those travelling in the area is to check before they travel and to plan an alternative route or allow more time for their journeys as roads will be busier than usual.”