The £2.7m investment will repair and re-paint the structure, while installing a new walkway, with work taking place from 10 January until 22 September 2022.
Drivers are being warned to plan ahead for possible delays as Lovers Walk, which runs parallel to the river, will be closed for the duration of the project and a traffic management system will be in place on Causewayhead Road.
A diversion route will be in place via Forth Street, Shore Road, Forth Place, Goosecroft Road, Cowane Street and Union Street.
Pedestrians/cyclists will continue to have access through Lovers Walk.
Ahead of our project beginning, Network Rail has organised an online public information event on Tuesday December 14 to offer members of the public the chance to ask questions directly to members of the project team. You can book a slot by visiting https://scotlandsrailway.com/projects/forth-viaduct/events.
Allison Flanagan, Scheme Project Manager at Network Rail, said: “We’re investing in improving the Forth Viaduct as part of our ongoing commitment to running a safe and reliable railway.
“While we understand that a road closure and traffic management system is never ideal and can add time to journeys, we need to have these measures in place to allow the project to be completed in the safest and most efficient way.
“When complete, the structure will be better protected against the elements for years to come and won’t need to be re-painted for up to two decades.
“We’d like to thank the community for their patience and understanding while we carry out these vital works.”